Motorcycle Oil Grades

Every motorbike company has different.

Motorcycle oil grades.

Viscosity is affected by temperature so different grades or weights of oil have different viscosities and only work properly over a fairly narrow range of temperatures. There are other motor oils on the market that meet the rating and grade of original bmw m oil but we strongly suggest that diy home mechanics think. It tells the user which temperature range the oil is and the right amount of viscosity to provide effective lubrication. Engine oil manufacturers in turn label containers with the oil rating.

For example at 212 degrees fahrenheit straight 30 weight oil has a vi of 9 3 to 12 4 a 40 weight 12 5 to 16 2 and a 50 weight a vi of 16 3 to 21 8. There is a catch though. Bmw m cars and savs have high performance engines that require different oil grades than non m models. The minimum level required for a motorcycle oil to reach jaso ma is 20.

The american petroleum institute api defines specifications for engine oils such as sg or se. A typical oem 15w40 running in oil will lose 12 7 part of the reason it needs changing after just 600 miles while a pure fully synthetic ester base oil will lose just 5. When looking at the engine oil grade just pay attention to the number before and after the letter w. Recommended engine oil grade for all motorcycle.

A cheap base oil sn 100 in the graph below loses 29 of its weight during the noack test. We only use original bmw m twin power engine oil in our m cars at the bmw repair guide. Can you use car oil in a motorcycle. Motor oil engine oil or engine lubricant is any one of various substances that consist of base oils enhanced with various additives particularly antiwear additives detergents dispersants and for multi grade oils viscosity index improvers motor oil is used for lubrication of internal combustion engines the main function of motor oil is to reduce friction and wear on moving parts and to.

The composition of engine oil is always evolving as new discoveries are made so the defined classifications follow suit with the evolution of oil quality. Most motorcycle manufacturers call for an sg rating introduced in 1995 or higher so always look for the latest designation when buying oil. The grade of oil your motorcycle uses is very important. So lets break it down on the things you need to know about engine oil grades.

If we say the engine is the heart of motorbike then we can say the engine oil is the heart of the engine.