"Why pay for used oil analysis or synthetic oils."
The oil labs want money upfront, and I am afraid to run past the door guard at Walmart with my unpaid for jugs of synthetic oil.
When I get a new car, new or used, I think I will have it the rest of my life and want to pamper it. When my car is old and I hate it, but have no money for a new frame, I still want to pamper what's left, which as you say, is the motor.
"It's a free country"