Do you run all conventional or synthetic oil in the k5?

[imiceman44]

Mobil says right on their site that it's 5 years. https://mobiloil.com/en/faq/ask-our...experts/shelf-life-of-unopened-mobil-1-quarts

Personally I'd like to see some testing of "NOS" oil, to see what, if anything, has happened to it. Up to you whether you run it, I certainly prefer data to a recommendation. But I've gotten a pretty consistent "5 years" each time I've asked a manufacturer for the shelf life of petroleum lubricants.

I'm sure at least SOME of the 5 year recommendation is based on the fact that the manufacturer has no idea nor control of how the oil is stored...in direct sun, hot/cold cycles, high humidity, etc. I doubt they are just making it up, I'm sure they could be open to liability if the oil went bad and they didn't give a range.

In the US, everything by law has to have a shelf life, not because everything does have it but because it limits liability.
Everything is always a best educated guess with worst case scenario.

 

[diesel4me]

Yeah,like the "best if used by" dates on foods...
They may still be perfectly edible,but not taste as great,for long after that date--but to cover their butts they put a date on it so if someone gets poisoned--"it's not our fault"..
I often wonder how many tons of food get tossed out that was still OK to eat..

 

[wazzabie]

I have many cases of motor oil that are 20+ years old. There was a special on Valvoline motor oil. I think it was 64 cents a quart. So I bought it in bulk and have slowly been using up the oil.

 

[1-ton]

Valvoline VR1 20W-50 Racing oil with high ZINC content. I have a brand new GM crate engine with a brand new Comp Cams flat tappet cam, and I am not taking any chances no matter what anybody says. It's my money...my engine, and I run what I want.

 

[imiceman44]

Valvoline VR1 Racing oil with high ZINC content. I have a brand new GM crate engine with a brand new Comp Cams flat tappet cam, and I am not taking any chances no matter what anybody says. It's my money...my engine, and I run what I want.

 

[onetonbb74]

I run conventional valvoline VR1 sae 30 wt. oil in my blazer, been using it since the motor was brand new.