PL-X20S Secondary Lift Jack
1.Scissor structure is convenient for tire changing and chassis repair.
2.The support is adjustable for different automobile.
3.This trolley can match with 4-post lift or large platform scissor lift.
4.Mechanical safety and anti-explosion device ensure safe running.
http://www.chinapuli.com/Secondary-Lift-Jack/PL-X20S-Secondary-Lift-Jack.html
2015年8月6日星期四
2015年8月5日星期三
National Car Care Month Tips Preparing Your New Or Used Audi
Pamper your luxury vehicle this April - after all, it's National Car Care month, the time to show your new or used Audi a little extra love. Here are ten tasks to carry out this month in honor of National Car Care Month.
1. Check for adequate fluid levels.
Even those who turn to their Portland Audi shop for an oil change are capable of checking their own vehicle's fluid levels. To get the expert's opinion on how to do this for your new or used Audi, consult with the techs at your Portland or Vancouver Audi dealership. Once you know how, check your levels every week to make sure your engine is getting the fluids it needs to deliver peak performance.
2. Evaluate HVAC performance.
Heating, ventilating, and air conditioning (HVAC) is not just a "nice to have" feature. HVAC is a "must have" for safety. If your defroster doesn't work, for instance, you could easily get into an accident during a snowstorm. If your HVAC is wonky, schedule a tune up at your Tigard or Vancouver Audi dealership.
3. Replace compromised hoses.
Regularly inspect the v-belts, serpentine belts, and timing belts in your new or used Audi. Replace any cracked or otherwise compromised belts, so as to avoid having a belt break in traffic.
4. Change the oil, check the filters.
If you're not much of a mechanic, let the Portland Audi experts at your local garage handle your oil change and filter examination. If it's been a while since your last tune-up, it's wise to take it to your North Portland or Vancouver Audi dealership for a complete system diagnostic.
5. Boost engine efficiency.
The engine gurus at your Portland Audi repair shop have methods of boosting fuel mileage while diminishing pollutant emissions.
6. Check tire alignment and air pressure.
Check your tire pressure once a month at a minimum. Be aware of the conditions of your tires; examine the sidewalls, where most flat tires originate, as well as the depth of the tread. If your tires are worn down below the manufacturer's tread specifications, it's time to get new tires. Have your alignment adjusted annually.
7. Get new wipers and replace broken lights.
Even mechanical novices can change out windshield wipers and exterior lights in most models.
8. Spiff up the inside of your New or Used Audi.
Carrying around all that clutter inside your new or used Audi only drags down your mileage. Clean the interior windows with glass cleaner and use newspapers rather than towels for a streak-free finish. Vacuum out the interior as well.
9. Assess the condition of your battery.
Tighten loose battery connections. If you see corrosion around the battery connections, it may be time for a new battery.
10. Examine suspension, steering, and brakes.
Brakes, steering, and suspension systems should be tested at least once a year. If you you're your car into the Portland Audi shop for oil changes, ask your mechanic to assess the state of the brake drums, rotors, and linings while he replaces the oil and filters.
Keeping your Portland Audi in top shape by conducting regular maintenance brings several advantages. For instance, you can expect a higher resale value for a car that's been well cared for. Additionally, these maintenance tasks will extend the life of your car and make for a more enjoyable driving experience.
automotive repair equipments, garage tools and equipments: http://www.chinapuli.com/Products/Full_View/
1. Check for adequate fluid levels.
Even those who turn to their Portland Audi shop for an oil change are capable of checking their own vehicle's fluid levels. To get the expert's opinion on how to do this for your new or used Audi, consult with the techs at your Portland or Vancouver Audi dealership. Once you know how, check your levels every week to make sure your engine is getting the fluids it needs to deliver peak performance.
2. Evaluate HVAC performance.
Heating, ventilating, and air conditioning (HVAC) is not just a "nice to have" feature. HVAC is a "must have" for safety. If your defroster doesn't work, for instance, you could easily get into an accident during a snowstorm. If your HVAC is wonky, schedule a tune up at your Tigard or Vancouver Audi dealership.
3. Replace compromised hoses.
Regularly inspect the v-belts, serpentine belts, and timing belts in your new or used Audi. Replace any cracked or otherwise compromised belts, so as to avoid having a belt break in traffic.
4. Change the oil, check the filters.
If you're not much of a mechanic, let the Portland Audi experts at your local garage handle your oil change and filter examination. If it's been a while since your last tune-up, it's wise to take it to your North Portland or Vancouver Audi dealership for a complete system diagnostic.
5. Boost engine efficiency.
The engine gurus at your Portland Audi repair shop have methods of boosting fuel mileage while diminishing pollutant emissions.
6. Check tire alignment and air pressure.
Check your tire pressure once a month at a minimum. Be aware of the conditions of your tires; examine the sidewalls, where most flat tires originate, as well as the depth of the tread. If your tires are worn down below the manufacturer's tread specifications, it's time to get new tires. Have your alignment adjusted annually.
7. Get new wipers and replace broken lights.
Even mechanical novices can change out windshield wipers and exterior lights in most models.
8. Spiff up the inside of your New or Used Audi.
Carrying around all that clutter inside your new or used Audi only drags down your mileage. Clean the interior windows with glass cleaner and use newspapers rather than towels for a streak-free finish. Vacuum out the interior as well.
9. Assess the condition of your battery.
Tighten loose battery connections. If you see corrosion around the battery connections, it may be time for a new battery.
10. Examine suspension, steering, and brakes.
Brakes, steering, and suspension systems should be tested at least once a year. If you you're your car into the Portland Audi shop for oil changes, ask your mechanic to assess the state of the brake drums, rotors, and linings while he replaces the oil and filters.
Keeping your Portland Audi in top shape by conducting regular maintenance brings several advantages. For instance, you can expect a higher resale value for a car that's been well cared for. Additionally, these maintenance tasks will extend the life of your car and make for a more enjoyable driving experience.
automotive repair equipments, garage tools and equipments: http://www.chinapuli.com/Products/Full_View/
Types Of Car Glass Used For Auto Glass Installation In Windshield Replacement
If windshield repair is not feasible any longer, you will have no choice but to agree to windshield replacement. To make the most of your windshield replacement, though, you should know about the various types of car glass used in auto glass installation. These are dealer car glass, original equipment manufactured (OEM) distributor car glass and aftermarket car glass, with each one having its own pros and cons.
The most expensive kind of car glass is dealer glass which is made available from authorized car dealerships. This means your dealer glass will depend on the brand of your vehicle. Dealer glass is made by the manufacturer of your vehicle's own car glass and bears the stamp of the brand. It is actually your vehicle's original car glass. Those who never want to veer away from anything original and branded will choose nothing else but dealer glass.
Similar in quality to dealer glass but much less expensive is original equipment manufactured (OEM) distributor car glass. It may not be made by the original manufacturer of your vehicle抯 car glass but its manufacturers are authorized to produce car glass according to the exact specifications of dealer glass. That means they have the same durability, size, thickness, color and shape as dealer glass. Manufacturers of OEM distributor car glass are highly respected in the automotive industry and their products are highly regarded as being of the highest quality, which is why they are trusted by vehicle manufacturers. The most well known manufacturers of OEM distributor car glass include Pilkington, Carlite, Pittsburg Plate Glass (PPG), Safeguard/Mopar, Ford, AP Tech, Asahi, Sekurit, Triplex, Scanex, Sicursiv, Guardian and Crinamex. If you decide on using original equipment manufactured (OEM) distributor car glass, make sure you stick with the reputable brands.
The previous statement is a warning of sorts. After all, there also are sources who claim to be OEM distributor car glass manufacturers but also produce substandard car glass alongside their OEM glass. Do not trust labels that say "from an OEM manufacturer" unless the car glass is specifically labelled as original equipment manufactured (OEM) distributor car glass.
The least expensive car glass is aftermarket car glass which is also referred to as original equipment equivalent (OEE) car glass. Its manufacturers are not legally authorized to make car glass according to the specifications copyrighted and licensed to vehicle brands. Aftermarket car glass, therefore, differs from dealer glass and OEM glass. It is also not covered by the same guarantees as dealer glass and OEM glass, and has been known to have a variety of problems including having a bad fit, leaks, visual distortions, poor solar performance and lack of protection against wind noise.
In comparing the three types of car glass, it is evident that original equipment manufactured car glass is the best option for consumers. You get all the benefits of dealer glass for much less dollars. In terms of quality, OEM glass exceeds even the standards of the US Department of Transportation. While the DOT calls for 80 percent windshield retention during frontal barrier crash tests, OEM glass provides a hundred percent.
When choosing OEM glass, also use OEM distributor car glass parts and adhesives for safety. In the case of mobile windshield replacement, for instance, low quality parts and adhesives are sometimes used. The prescribed drying time for the adhesive is also usually not observed, leaving the vehicle driver and passengers at risk with a windshield that is not properly fixed in place. Only professionally certified auto glass technicians will be knowledgeable enough on all standards that should be met in terms of products and techniques.
Whatever car glass you choose for auto glass installation in your windshield replacement, make sure all components and service providers pass the highest safety standards.
car repair equipments wholesaler, car garage equipments manufacturer: http://www.chinapuli.com/Products/Full_View/
The most expensive kind of car glass is dealer glass which is made available from authorized car dealerships. This means your dealer glass will depend on the brand of your vehicle. Dealer glass is made by the manufacturer of your vehicle's own car glass and bears the stamp of the brand. It is actually your vehicle's original car glass. Those who never want to veer away from anything original and branded will choose nothing else but dealer glass.
Similar in quality to dealer glass but much less expensive is original equipment manufactured (OEM) distributor car glass. It may not be made by the original manufacturer of your vehicle抯 car glass but its manufacturers are authorized to produce car glass according to the exact specifications of dealer glass. That means they have the same durability, size, thickness, color and shape as dealer glass. Manufacturers of OEM distributor car glass are highly respected in the automotive industry and their products are highly regarded as being of the highest quality, which is why they are trusted by vehicle manufacturers. The most well known manufacturers of OEM distributor car glass include Pilkington, Carlite, Pittsburg Plate Glass (PPG), Safeguard/Mopar, Ford, AP Tech, Asahi, Sekurit, Triplex, Scanex, Sicursiv, Guardian and Crinamex. If you decide on using original equipment manufactured (OEM) distributor car glass, make sure you stick with the reputable brands.
The previous statement is a warning of sorts. After all, there also are sources who claim to be OEM distributor car glass manufacturers but also produce substandard car glass alongside their OEM glass. Do not trust labels that say "from an OEM manufacturer" unless the car glass is specifically labelled as original equipment manufactured (OEM) distributor car glass.
The least expensive car glass is aftermarket car glass which is also referred to as original equipment equivalent (OEE) car glass. Its manufacturers are not legally authorized to make car glass according to the specifications copyrighted and licensed to vehicle brands. Aftermarket car glass, therefore, differs from dealer glass and OEM glass. It is also not covered by the same guarantees as dealer glass and OEM glass, and has been known to have a variety of problems including having a bad fit, leaks, visual distortions, poor solar performance and lack of protection against wind noise.
In comparing the three types of car glass, it is evident that original equipment manufactured car glass is the best option for consumers. You get all the benefits of dealer glass for much less dollars. In terms of quality, OEM glass exceeds even the standards of the US Department of Transportation. While the DOT calls for 80 percent windshield retention during frontal barrier crash tests, OEM glass provides a hundred percent.
When choosing OEM glass, also use OEM distributor car glass parts and adhesives for safety. In the case of mobile windshield replacement, for instance, low quality parts and adhesives are sometimes used. The prescribed drying time for the adhesive is also usually not observed, leaving the vehicle driver and passengers at risk with a windshield that is not properly fixed in place. Only professionally certified auto glass technicians will be knowledgeable enough on all standards that should be met in terms of products and techniques.
Whatever car glass you choose for auto glass installation in your windshield replacement, make sure all components and service providers pass the highest safety standards.
car repair equipments wholesaler, car garage equipments manufacturer: http://www.chinapuli.com/Products/Full_View/
PL-T01 Стяжки пружин механические
PL-T01 Стяжки пружин механические
За счет индивидуальных регулировок по высоте и диаметру приспособление
позволяет производить сжатие и фиксацию пружин различной конфигурации
(цилиндрические, конусные, бочкообразные, пр.) и разным шагом навивки.
Большой рабочий диапазон.
http://chinapuli.ru/Garage-Tools/Strut_Spring_Compressor/PL-T01-Strut-Spring-Compressor.html
За счет индивидуальных регулировок по высоте и диаметру приспособление
позволяет производить сжатие и фиксацию пружин различной конфигурации
(цилиндрические, конусные, бочкообразные, пр.) и разным шагом навивки.
Большой рабочий диапазон.
http://chinapuli.ru/Garage-Tools/Strut_Spring_Compressor/PL-T01-Strut-Spring-Compressor.html
PL-JB90201 Gato hidráutico
PL-JB90201 Gato hidráutico
Excelente para trabajo pesado y reparación automotriz, se levanta o empuja
el peso pesado horizontalmente y verticalmente!
Característica:
Funciona en posición horizontal y vertical
elevación estable y seguro.
http://www.chinapuli.es/Hydraulic-Bottle-Jack/PL-JB90201-Hydraulic-Bottle-Jack.html
Excelente para trabajo pesado y reparación automotriz, se levanta o empuja
el peso pesado horizontalmente y verticalmente!
Característica:
Funciona en posición horizontal y vertical
elevación estable y seguro.
http://www.chinapuli.es/Hydraulic-Bottle-Jack/PL-JB90201-Hydraulic-Bottle-Jack.html
Nitrogen Generator To The Tyre Inflation Has Proved Useful
1. Nitrogen tyre inflation improve the stability and comfort of the tire traveling
Almost inert nitrogen diatomic gases, chemical properties extremely lively, the gas molecules are larger than oxygen molecules, difficult to thermal expansion and contraction amplitude of deformation is small, its permeation speed of the tire wall is slower than that of air, about 30 to 40 percent can be maintained stabilize the tire pressure, tire driving stability, ensure driving comfort; nitrogen audio conductivity is low, is equivalent to 1/5 of the ordinary air, using nitrogen can effectively reduce the tire noise and improve quietness traveling.
2. Prevent puncture and lack of air grind line
Puncture is the number one killer in road traffic accidents, according to statistics, 46% of accidents are caused by tire failure on the highway, a flat tire one accounted for 70% of the total tire accident. Driving the car, the tire temperature rise due to friction with the ground, especially at high speeds and the emergency brake, the gas temperature in the tire will increase rapidly, tire pressure surge, so there will be the possibility of puncture. The high temperatures cause tire rubber aging, fatigue strength decreased, severe tread wear, and may puncture the important factors. Compared with general high pressure air, high purity nitrogen as anaerobic and almost free of water does not contain oil, and its low coefficient of thermal expansion, low thermal conductivity, the temperature was raised slowly, and reduces tire heat accumulating speed, non-contingent nor Assistant contingent characteristics, it is possible to greatly reduce the chance of puncture.
3. Extend tire life
Using nitrogen gas, the the tire pressure stable volume change is small, and greatly reduces the possibility of irregular tire friction, such as crown grinding tread shoulder wear, partial wear, and to improve the life of the tire; aging of rubber is subject to the oxygen molecules in the air oxidation due to the decline in its strength and elasticity, aging and there will be cracking phenomenon, this time caused by one of the reasons for the shortened life of the tire. Nitrogen separation device can greatly limit to exclude the air of oxygen, sulfur, oil, water and other impurities, effectively reducing the degree of oxidation of the inner liner layer of the tire and rubber corrosion phenomenon, does not corrode metal rim, extending tire life, but also greatly reduces the status of the rim rust.
4. Reduce fuel consumption and protect the environmental
Lack of tire pressure and heated scroll the increased negative force, will result in increased fuel consumption when the car is traveling; nitrogen can maintain stable tire pressure, delaying the tire pressure to reduce outside, its dry and not oil-free water, thermal conductivity low, heating up the slow characteristics, to reduce the increase in temperature in the tire when walking, as well as small deformation grip improve and reduce the rolling resistance, so as to achieve the purpose of reducing fuel consumption. The relevant U.S. authorities tires with sufficient nitrogen and charge air contrast experiments, the statistical results show that in the experiment than air-filled tire filled with nitrogen gas to run more than 26% of the mileage. Nitrogen tire inflation, tire pressure design can achieve fuel consumption indicators in automotive design. Experimental results show that nitrogen tire 2-10% more fuel efficient than the air-filled tires. Effective in reducing air pollution. The Brazilians practice, nitrogen gas tire traveling fifty thousand kilometers still do not need qi. Nitrogen tire more resistant to wear, than the pneumatic tire is not reached on the damaged tire tread loss index, nitrogen filling the tire to run an average mileage, 48% more than the air-filled tires.
nitrogen generator http://www.chinapuli.com/Nitrogen-Generator-Inflator-Machine/
Almost inert nitrogen diatomic gases, chemical properties extremely lively, the gas molecules are larger than oxygen molecules, difficult to thermal expansion and contraction amplitude of deformation is small, its permeation speed of the tire wall is slower than that of air, about 30 to 40 percent can be maintained stabilize the tire pressure, tire driving stability, ensure driving comfort; nitrogen audio conductivity is low, is equivalent to 1/5 of the ordinary air, using nitrogen can effectively reduce the tire noise and improve quietness traveling.
2. Prevent puncture and lack of air grind line
Puncture is the number one killer in road traffic accidents, according to statistics, 46% of accidents are caused by tire failure on the highway, a flat tire one accounted for 70% of the total tire accident. Driving the car, the tire temperature rise due to friction with the ground, especially at high speeds and the emergency brake, the gas temperature in the tire will increase rapidly, tire pressure surge, so there will be the possibility of puncture. The high temperatures cause tire rubber aging, fatigue strength decreased, severe tread wear, and may puncture the important factors. Compared with general high pressure air, high purity nitrogen as anaerobic and almost free of water does not contain oil, and its low coefficient of thermal expansion, low thermal conductivity, the temperature was raised slowly, and reduces tire heat accumulating speed, non-contingent nor Assistant contingent characteristics, it is possible to greatly reduce the chance of puncture.
3. Extend tire life
Using nitrogen gas, the the tire pressure stable volume change is small, and greatly reduces the possibility of irregular tire friction, such as crown grinding tread shoulder wear, partial wear, and to improve the life of the tire; aging of rubber is subject to the oxygen molecules in the air oxidation due to the decline in its strength and elasticity, aging and there will be cracking phenomenon, this time caused by one of the reasons for the shortened life of the tire. Nitrogen separation device can greatly limit to exclude the air of oxygen, sulfur, oil, water and other impurities, effectively reducing the degree of oxidation of the inner liner layer of the tire and rubber corrosion phenomenon, does not corrode metal rim, extending tire life, but also greatly reduces the status of the rim rust.
4. Reduce fuel consumption and protect the environmental
Lack of tire pressure and heated scroll the increased negative force, will result in increased fuel consumption when the car is traveling; nitrogen can maintain stable tire pressure, delaying the tire pressure to reduce outside, its dry and not oil-free water, thermal conductivity low, heating up the slow characteristics, to reduce the increase in temperature in the tire when walking, as well as small deformation grip improve and reduce the rolling resistance, so as to achieve the purpose of reducing fuel consumption. The relevant U.S. authorities tires with sufficient nitrogen and charge air contrast experiments, the statistical results show that in the experiment than air-filled tire filled with nitrogen gas to run more than 26% of the mileage. Nitrogen tire inflation, tire pressure design can achieve fuel consumption indicators in automotive design. Experimental results show that nitrogen tire 2-10% more fuel efficient than the air-filled tires. Effective in reducing air pollution. The Brazilians practice, nitrogen gas tire traveling fifty thousand kilometers still do not need qi. Nitrogen tire more resistant to wear, than the pneumatic tire is not reached on the damaged tire tread loss index, nitrogen filling the tire to run an average mileage, 48% more than the air-filled tires.
nitrogen generator http://www.chinapuli.com/Nitrogen-Generator-Inflator-Machine/
Engine oil - Which is the way to go?
Introduction
The engine is often the 'heart' of an automobile. Like how they humans need to keep our heart and mind in the finest of conditions, it is important to maintain and service the power train to make positive a smooth ride.
One of, if not the most important aspect of vehicle maintenance, especially under the hood, is engine oil. The quality of the oil largely affects the lifespan of your engine. Some of us might lack the concern to the type of motor oil that goes into our engine, having the common mentality - oil is oil, right?
Types of engine oils
There are three types of engine oils.
Firstly, we have mineral oils that are refined and derived from nature. Mineral oils come from the ground and are created from the oil refining process. They have been around for a long period of time and it's less expensive than synthetic oils.
Secondly, we have synthetic oils that are more expensive because of the chemical engineering involved in laboratories. They still have a base mineral oil, but they've been engineered to allow for more miles to be driven between oil changes, and they often have additives to help keep the oil cleaner for an extended period. It's also more stable at optimum temperatures than mineral oil.
Lastly, we have the semi-synthetic or premium oil which is essentially a mixture of the above mentioned two.
What does it do?
Your engine oil performs as a lubricant under tremendous heat and pressure and prevents friction between all metal surfaces in your engine when grinding together.
It also transfers heat away from the combustion cycle and delays nasty by-products like silica (silicon oxide) and acids. Finally, engine oil minimises the exposure to oxygen and thus reduces oxidation at higher temperatures.
Oils get thinner as they heat up. Single grade oils get too thin when heated for most modern engines.
Grading / Classification / Oil Viscosity
An organisation called the Society of Automotive Engineers (SAE) tests all engine oil at roughly 98.9 degrees Celsius, which is the usual temperature an engine operates at. They run the oil through a device to time the oil flow, in seconds, from one end to the other. There are two ways to how oil thickness is measured: single grade and multi-grade.
A SAE 30 classification is single grade oil that takes approximately 30 seconds to flow through the tube. Oil changes its thickness with temperature and the single rating only represents the flow of oil when it's warm. When performing a cold start, oil flows more slowly, hence, there is a need for a multi-grade rating that gives you both a hot and cold rating.
Thus for multi-grade rating 10W-30 classification, the 30 is similar to the single grade rating but the 10W is the rating for cold starts, derived from a standardised rating system developed by the SAE for winter oil use.
While the 'W' itself refers to winter, the numbers represent how long it takes for the oil to flow. The thinner the oil, the smoother it moves through and lubricates parts of your engine. The best engine oils have just about the right viscosity to ensure a smooth flow between components.
When to Change Your Oil
For decades, the basic rule for oil change was every 4,800 km (3,000 miles) or 3 months, whichever came first. Yet with advances in technology, engine design, and advanced engine oils, most modern cars can function farther between oil changes.
Many modern cars can go between 8,000 or 16,000km (5,000 - 10, 000 miles) between oil changes, depending on your driving habits and the model you drive. If you are a heavy driver you might have to change it a sooner than a light-footed driver though.
As cars are fitted with more and more technologies, some modern cars can also function as your assistant in informing you the car's next oil change - like the iDrive system in a BMW. （By sgcarmart）
Auto service--Lube Equipments manufacture and wholesaler: oil extractor, engine lubricating system cleaner, mobile waste oil drainer
http://www.chinapuli.com/Lubrication-Equipments-Tank-Series/
The engine is often the 'heart' of an automobile. Like how they humans need to keep our heart and mind in the finest of conditions, it is important to maintain and service the power train to make positive a smooth ride.
One of, if not the most important aspect of vehicle maintenance, especially under the hood, is engine oil. The quality of the oil largely affects the lifespan of your engine. Some of us might lack the concern to the type of motor oil that goes into our engine, having the common mentality - oil is oil, right?
Types of engine oils
There are three types of engine oils.
Firstly, we have mineral oils that are refined and derived from nature. Mineral oils come from the ground and are created from the oil refining process. They have been around for a long period of time and it's less expensive than synthetic oils.
Secondly, we have synthetic oils that are more expensive because of the chemical engineering involved in laboratories. They still have a base mineral oil, but they've been engineered to allow for more miles to be driven between oil changes, and they often have additives to help keep the oil cleaner for an extended period. It's also more stable at optimum temperatures than mineral oil.
Lastly, we have the semi-synthetic or premium oil which is essentially a mixture of the above mentioned two.
What does it do?
Your engine oil performs as a lubricant under tremendous heat and pressure and prevents friction between all metal surfaces in your engine when grinding together.
It also transfers heat away from the combustion cycle and delays nasty by-products like silica (silicon oxide) and acids. Finally, engine oil minimises the exposure to oxygen and thus reduces oxidation at higher temperatures.
Oils get thinner as they heat up. Single grade oils get too thin when heated for most modern engines.
Grading / Classification / Oil Viscosity
An organisation called the Society of Automotive Engineers (SAE) tests all engine oil at roughly 98.9 degrees Celsius, which is the usual temperature an engine operates at. They run the oil through a device to time the oil flow, in seconds, from one end to the other. There are two ways to how oil thickness is measured: single grade and multi-grade.
A SAE 30 classification is single grade oil that takes approximately 30 seconds to flow through the tube. Oil changes its thickness with temperature and the single rating only represents the flow of oil when it's warm. When performing a cold start, oil flows more slowly, hence, there is a need for a multi-grade rating that gives you both a hot and cold rating.
Thus for multi-grade rating 10W-30 classification, the 30 is similar to the single grade rating but the 10W is the rating for cold starts, derived from a standardised rating system developed by the SAE for winter oil use.
While the 'W' itself refers to winter, the numbers represent how long it takes for the oil to flow. The thinner the oil, the smoother it moves through and lubricates parts of your engine. The best engine oils have just about the right viscosity to ensure a smooth flow between components.
When to Change Your Oil
For decades, the basic rule for oil change was every 4,800 km (3,000 miles) or 3 months, whichever came first. Yet with advances in technology, engine design, and advanced engine oils, most modern cars can function farther between oil changes.
Many modern cars can go between 8,000 or 16,000km (5,000 - 10, 000 miles) between oil changes, depending on your driving habits and the model you drive. If you are a heavy driver you might have to change it a sooner than a light-footed driver though.
As cars are fitted with more and more technologies, some modern cars can also function as your assistant in informing you the car's next oil change - like the iDrive system in a BMW. （By sgcarmart）
Auto service--Lube Equipments manufacture and wholesaler: oil extractor, engine lubricating system cleaner, mobile waste oil drainer
http://www.chinapuli.com/Lubrication-Equipments-Tank-Series/
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