LOL - 5 quarts of 75w90 please

[User Name]

Originally Posted by Kracka

75W-90 gear oil is about as thick as a 10W-40 motor oil, but the additive package is different.

K..

So you're saying I can run 75w 90 gear oil in my engine too? :P I'm kidding.

Way to make me feel dumb.

[Kracka]

Originally Posted by User Name

K..

So you're saying I can run 75w 90 gear oil in my engine too? :P I'm kidding.

Way to make me feel dumb.

Don't feel dumb, looking at the numbers most people would assume the same thing!

A lot of cars say its ok to substitute 5W-30, 10W-30, or 10W-40 (depending on the car) engine oil if gear oil is not available. Like anything else though, you're of course best off buying a product made specially for the application i.e. transmission.