I'm just another "proud" owner of a 98 trooper LTD. I've had it for a number of years. My engine mysteriously seized around 100 000 KM, with regular mainenance and whatnot. It cost me over $8000 by the time I shipped a new engine from japan and had it installed. My new engine has started using oil just like the last one. Isuzu couldn't care less...and now they've left Canada altogether so I'm out of luck......maybe I'll try this diesel oil thing....