I was just watching speed channel and they had a special on oil. They didn;t say anything on how long you can keep either synthetic oil or regular oil on the shelf before using it. Does anyone have any info. on how long it can be kept on the shelf. I have accumulated lots and it has been on my shelf.
The same question could be said for 2 stroke oil as well, I have both for various engines.

You are safe up to 5 years in an area like a garage that does not see big temperature changes if it has not been opened.

What about after it's open?

so what happens to it sitting in the garage in a box?

Ive never heard of a motor oil shelf life