I used to buy used, if the price and condition were right. And i generally keep my vehicles a while. But now with 20wt oils, i don't want a car that's been run on 20wt. I now buy new, and run what i want.
Flame suit on. I know cars are not breaking down left and right on 20wt, but i just don't want one thats been run long on 20wt.