I was cleaning out the old storage room at work and found a 5gal bucket of "NEW" Rotella 15w-40 Conventional most of the lettering on the bucket was gone due to some chemicals falling over the bucket but there was a date tag on the bottom of the bucket that read "00-15-10 im assuming thats the date on the bucket and contents with in.
So with the assumption that it is in fact and 18 year old batch would you run it? If I do decide on using it its most likely going to be used one of the equipment at work.

 

I wouldnt run it in anything I cared about. Instead, I'd mix it with some paint thinner and paint my utility trailer decks with it

 

Nope I wouldn't run it in anything. The TBN is probably low and the additive package has for sure dropped out of suspension.

 

Agree with both of you.

Oil for the bar on a chainsaw....that's about it as far as a lubricant for any metal.

 

Interesting never new the addives would decipate with time,

 

I never knew they would "drop out of suspension". I'll have to look into that. I wouldn't think there would be any issue, but I am not sure.

 

As long as it was sealed I'd think it is okay. Call blackstone and ask them, they'd tell you for sure. They could even test it for you. Still be cheaper then buying new.

 

Even water has an expiration date I would think the cleaning additives wood dissolve like soap going weak

 

Ask the manufacturer. I spoke with powerservice about the diesel additive I use from them. They said try to use it within a year of opening and if sealed it was good almost indefinitely. I was asking since the winter stuff was on sale locally last spring. After speaking to them I stocked up.

Not saying they are the same but you may be surprised.

 

Send a sample to test.

 

Ill order a Test kit on Monday and send it out ASAP im just curios as to what Blackstone scientist will say.

 

Me too plus some more to make 10 characters or more..

 

A lot of that is just complete BS, there is an expiration for salt - even though it's already millions of years old, for some reason in a year or two it'll be past the "best by" date lol

 

I believe that once oil has a few cycles on it the carbon effect takes over from there on the age .
So even a few cycles on burnt oil the time is ticking .

 

Excellent point on salt there and my bet on an expiration date would be the FDA. They seem to need an expiration date on everything we consume.