I am still amazed at all the fine folks on here that keep oil around for 25 years and swear by it. I've never considered it. Don't know why people would do things like that to begin with. Eventually, everything has a shelf life and goes bad. Even oil does but when exactly might be up for debate. If I pulled into a garage for an oil change and someone put 25 year old oil into my car, I would be seriously displeased. The API service criteria 25 years ago is nothing like the ones today making the oil back then obsolete for modern engines.......probably rebuilt ones too. My 2 cents.
I am the only "folk" who keeps oil for 25 years and so would you if you were in my shoes. I am not suggesting to use 25 yo oil in new cars and trucks today and I don't.
I was trying to make the point that if you got 10 year oil on the shelf to not throw it away it can be used in our old cars and trucks.
Not in our new cars.
But like said above...I bet you would like some of the old stuff I got if you were breakin in your flat tappet cam.
And no please don't PM me to ask to buy any because I have very little old oil left at this point.
IMO the oil I have used don't go bad at 25 years old. That is all.
