What Does 10w30 Stand For

The 10w30 and 5w30 both have different thicknesses in cold temperatures and 10w30 is thicker than 5w30.

What does 10w30 stand for. Look for something that does. 1 the purpose for which it is intended i e. Motor oil gear oil etc 2 the viscosity i e. But what s the difference between 5w 20 5w 30 10w 30 and so on.

A lower number means that it is easier to get through the internal components of the engine. Your engine s oil prevents friction and wear while carrying away heat and contaminants. In regard to multigrade oils the first number in the code such as 10w in sae 10w 30 means that the oil can still be pumped by the engine at a temperature as low as a single grade 10w oil. A 5w like in sae 5w 30 can be pumped at an even lower temperature and a 0w like in sae 0w 30 will pump at the lowest tested temperatures.

When it s time for an oil change or just to top it up you ll see a few different options a combination of numbers and letters. In other words it keeps the engine healthy. Also if an oil does not contain any viis and can pass as a multi grade that oil can be labeled with either of the two. In regard to multigrade oils the first number in the code such as 10w in sae 10w 30 means that the oil can still be pumped by the engine at a temperature as low as a single grade 10w oil.

To be blunt about the subject if a bottle of oil does not contain the following basic information then do not buy it. And that s what the w stands for. So it is best for vehicles running in cold climates to use the 5w30 since it is thinner than the 10w30. 10w40 5w30 etc for motor oils and 80w90 75w90 etc for gear oils.

What do 5w30 and 10w30 stand for. The first number 5 or 10 indicated on these oils stands for the viscosity or how easily the oil pours at low temperatures. This is different than an oil labeled 5w30 which has a thinner viscosity when the engine is cold at 5w. Therefore an oil labeled as 10w 30 must pass the sae j300 viscosity grade requirement for both 10w and 30 and all limitations placed on the viscosity grades for example a 10w 30 oil must fail the j300 requirements at 5w.