Does unused motor oil go bad sitting in the plastic bottle?

[AllGold]

I wouldn't think so, but just wanted to be sure.

For background, I just changed the oil on my mower and I've had that bottle for at least five years.

[Racer X]

no. not to worry. It's not cooking oil.

[mrbigstuff]

Nope

[Acer]

It's already million of years old. What's a few more?

[pdq]

Yeah, I wouldn’t think so either. Vegetable oils can undergo oxidation (and become rancid), but that requires aliphatic double bonds, and I don’t think oil for lubrication has any of those.

[Racer X]

pdq wrote:
Yeah, I wouldn’t think so either. Vegetable oils can undergo oxidation (and become rancid), but that requires aliphatic double bonds, and I don’t think oil for lubrication has any of those.

depends on what you are lubricating...... miley-excited001:

[testcase]

Yeah.........

In about 100,000,000 years.


Sadly, the plastic bottle is only good for 99.000,000 years. :oldfogey: