We all hear the truism that short trips are where much of the engine wear takes place. But does that equate to shortening the life of the engine? I am pretty sure I've come across UOAs here that somewhere in the comments, indicated that much of the driving was short trips, and I don't recall seeing any of these that had incredibly high wear metal results. Usually when that was referred to, the Blackstone comments will be something like, "Even though you said you did a lot of short tripping, the wear metal results were fine." But regardless of a UOA reading, I'm wondering--do cars that do a lot of short tripping, have engine problems earlier? Or do these engines go 200-300K just like the others, with proper maintenance?