Originally Posted by benz_addict
I can certainly say these 55k engines are made to last. Friend of mine has a G55 with over 350,000KMS. Unfortunately my car had been a victim of a bad tune which led my engine to destroy pistons 8 and 6 last year. However, like many of us on this board I am also one of those monkeys that can't drive my cars stock. But now pulley and EC tune =
The tunes often run too lean and the pistons overheat and fail. Very common with tweaking. But if you've got the money and engine failures don't hurt your feelings, then have at it. My problem is that I nearly anthropomorphize my cars. They're like the family pet. I love them too much to risk their health. Man's best friend.