I HAVE THIS ENGINE THAT THE HEADS WERE CHANGED ON THEN IT STARTED TO USE OIL BAD, WAS SENT TO US AND WE REBUILT IT, 1 BURN'T PISTON HIGH MILAGE SO WE REBUILT IT COMPLETE AND REINSTALLED THE HEADS, IT WENT 500KM AND BURN'T A PISTON, STRIPPED IT DOWN AND REPLACE... Login to read more.