my '88 240 has about 300,000 miles and i don't see this engine going anytime soon, its never had any major repairs,(the b230 engine and the AW71 trans. are bullit proof ,mines been run low on oil,overheated when the radiator blew) just timing belts and oil changes, it still has the water pump that was on it when i got it in '94,who knows it might be the original, did have to replace the radiator last year, it was over it's ten year life span for a plastic radiator,i changed the auto trans. fluid in '94 and its still working fine with
300,000 miles(wouldn't dare change it now). i'll drive it till the body and interior turn to dust. mark