Good stuff, my 2nd XJ I bought with 209k (89 model) on it from the original owner (elderly woman) I lifted it within a week and beat the hell out of it, including submerging the engine completely. I changed the oil every 3000, beat it hard for 30k miles, then sold it. in those 30k miles I replaced the trans, tcase, and both axles, but that engine never gave me a problem. Sold it at just shy of 250k and it ran perfect, no misses, surprisingly no vacuum leaks, nothing. No doubt if you take good care of it, itll run forever.