How long would a can of motor lubricating oil last. (opened and unopened )?

Question

For cars.

Answer 1

standard oil doesn't degrade, you can actually still buy army surplus oil (sealed) i've seen it dated as early as 1961 (all the oil was dated)

Answer 2

Well, as the raw material is in effect millions of years old already, I wouldn't think that even a human lifetime would make a lot of difference.

It will only start to oxidise in the presence of heat above 80 deg C so thats not really a problem.

Your biggest problem would be contamination if the can was left uncovered.

Answer 3

To find out for sure, try a little test. Set an oil can ( unopened ) on a shelf. Next to it, set a can of cold beer ( unopened ). On another shelf, ditto with opened cans.

Answer 4

no time limit if kept clean

Answer 5

It will last for years as long as the top is on to keep out moisture and dirt.