[jitteryguy]

I work on a lotta HMMWV's with 6.2 & 6.5's , they are a tough engine, take more abuse than they get credit for (amagine upset'n a neighbor kid then tell'n he has to drive your truck in the desert for 6 to 12 month's, it will be abused). remember the oil will always be black, even soon as it start's after an oil change, nature of an old deisel. follow the last couple of BabyJay's post and you should be good.

I recently bought one of my son's a '84 with a 6.2/4speed, he's get'n bought 25MPG. so if it run's good I'd jump on it.