Hi folks,

I have been gifted a few cases of 20 50 and 10W 40 oil.

I plan to keep synthetic in my bus and don’t really have lots of other equipment around.

Is there any reason 20 to 30 year old unopened oil stored in a house basement would not be usable by a bus friend or two who are still using regular oil?

I don’t want to offer to bus friends if it could do harm.
Nain stream brands.

Eric Caron 
85 GL Auto