funny this subject just came up. i work in a dodge/jeep dealer and some one brought in a 2001 tj with 187,000kms on it complaining of a funny oil pressure gauge. well the gauge isnt funny, the engine has next to no oil pressure, thus, needs rebuild or new engine. sad thing is the guy picked it up from auction not long ago. the auction numbers are still on the window. too bad really, its got the 4.0L, 5 speed, dana 44 rear end, no a/c, almost my perfect TJ, lol!