I knew a WHEELED VEHICLE MECHANIC in the Army whos 2008 (bought 2014) 300 5.7L blew up in January due to him never changing the oil.
said "he didn't know it needed oil changed"
Said he bought it used with 85K on it and it is now totaled at 110K
25K on OCI, Chrysler/Dodge Dealership here that he bought it from uses Pennzoil Gold and LuberFiner E-cores on their USED cars.
I always dump my used oil into the lawnmowers, run it for a season, changing every Spring, Summer, and Fall. Ill store it with NEW oil in the winter.
The collection of Spring/Summer/Fall used car turned used mower oil is then placed in an surplus military outdoor diesel burn space heater that cost 5$ at auction to burn off and heat up the back patio area. I mix it 50% Used oil, 50% diesel inside a surplus military fuel can, and the lines supply it to the heater.. Burns longer than straight diesel.
Any left over from the previous season gets re-stored and gets the next years car waste oil added to it, and repeat.
Anyone have a back patio/porch, look for one of these, they can be found pretty cheap, as can surplus fuel cans.
I am not a hippie, but hey, it works.
Never had a car/mower/heater issue,
might as well get that little bit of warmth and the full money I spent out of the stuff. I hear walmarts are starting to convert to burn stored TLE from the year in their store heating system. How much that is true, I don't know.