My 92 has 245K; 93 is closing in on 160K, and should pass the 92 by Labor Day. I know aguy in Missouri that had to replace the head gasket on his 90 a few years ago, and he could see the hone marks in the cylinders at 390K, though they were worn somewhat. He has over 600 on the original fuel system, transmission, and rear end. My 2 use about a quart when all the seals and gaskets are installed correctly (shame on me; front main didnt last too lopng on 93) Neither one of mine had seen real good care, oil changes, and that is about it, before I got it. I always change all fluids on a new-to-me vehicle. On this last one, I have had a few leaks pop up, but nothing I am going to fix in 30 degree days and 5 degree nights, and a 20+ mph breeze.
Daniel