Old Oil

[TomC]

I've had Chevron Delo 100 sae40 under my bus for several years as standby. I called Chevron and talked to the lubrication section. They said if the oil is over 60 months old, throw it away, because the additives separate. I asked-even if you shake up the jug, and they said, no don't chance it after 60 months. Good Luck, TomC

[dtcerrato]

Tom IMHO that is pure BS! - but that is just me...
The same BS applies to expiration dates on food, pharmaceuticals, drinking water, everything! So the manufacturers can cash in.
I've use new old stock if it was twice that old. But like I said that is just me .

[buswarrior]

Unless that voice on the phone is writing a paper to submit to the SAE on this "old oil" theory...

Even credentialed people can't be trusted to speak the truth anymore.

Talk is cheap, i'd be demanding a copy of the peer reviewed journal publication.

Oh, I'm sorry...

Happy coaching!
Buswarrior

[sledhead]

best before date on milk maybe

but oil no way 

just another scam

[luvrbus]

It's been posted for years about Delo 100 separating 55gal drums come with instructions for remixing every 6 months before using Tom is not posting any BS ,it doesn't take 5 years to separate I know that for sure   

[windtrader]

none of here has a clue what is actually happening at a molecular level. The additives could very change the binding properties with petroleum molecules so technically there might be this issue. Now, the practical matter could be it don't matter. we will never know unless you want to spend a lot of time research refining industry conference papers and academic papers written on additives and fuel mixing and such.

[tr206]

Most sites say if stored properly 5 years on conventional motor oil. It's your money your motor do as you please it a free country (for the moment). If I had a lot of old oil I would take a sample of the oldest have it tested an go from there but a couple gallons I would just dump it. Years ago a lot of truck drivers I knew had nowhere to get rid of their used oil so they would dump it in their fuel tanks and burn it.

[chessie4905]

Notice how tire companies have gradually reduced the expected life of tires? More sales? Maybe soon tires will have expiration dates stamped into them like food and drinks.

[windtrader]

if not mistaken Michelin increased 10 ten years

[RJ]

if not mistaken Michelin increased 10 ten years

Don -

Maybe so, but they're still notorious for sidewall cracking when they're about 4.5 - 5 years old. . .

FWIW & HTH. . .

RJ

[luvrbus]

if not mistaken Michelin increased 10 ten years

It is a 7 year warranty not worth the paper it is written on,a  year later I am still waiting on a warranty claim on a 315/80/22.55 with a sidewall blow out   

[lvmci]

The southwest is the worst for sidewall cracking, unless you have a bus barn, protect those tires from the sun...

[Lin]

I have heard that the additives settle out of oil after a bit but was then always advised to shake the bottle/can before use.  It would seem to me that a good shaking would start the remix process and the engine would do the rest in pretty short order.

[windtrader]

I believe the heat is as damaging the sun. Most of the manufacturer testing is done using heat, not UV.