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Out of date motor oil
Posted: 12 Jan 2011, 14:44
by pistachio
Hi folks, I just brought a botle of 15-40 oil and got it home and noticed it had an expiration date of 7-10-2010... Is it still OK to use?
I wouldn't of thought oil would go out of date. This looks like a newish bottle, its not dusty like its been hiding at the back of the shelf and it doesn't look like its from the 70's or anything...
Re: Out of date motor oil
Posted: 12 Jan 2011, 15:22
by kevtherev
is it mineral?
Re: Out of date motor oil
Posted: 12 Jan 2011, 15:49
by pistachio
it is yes
Re: Out of date motor oil
Posted: 12 Jan 2011, 16:39
by Oldiebut goodie
It lies underground for millions of years, comes to the surface and then gets an expiry date.
Re: Out of date motor oil
Posted: 12 Jan 2011, 16:49
by edoh
'it doesn't look like its from the 70's or anything...'
errrr....
i do....
Re: Out of date motor oil
Posted: 12 Jan 2011, 17:03
by edoh
a quote from someone who might know...
'Oil breakdown is caused by sheer, very high pressures, very high temperatures, acids from the combustion process etc. Sitting in a container on the shelf, the only process that could damage an oil is oxidation. There is next to no oxygen in a full container and anyway normal temperatures are way too low for any problem to occur... I can see no reason why an oil should not have a virtually unlimited shelf life.'
Seems that the only possible problem might be if the seal/canister has been opened -
otherwise should be fine..