Originally Posted By: mechtech2
White smoke is coolant.
Oil is somewhat bluer and darker.
Maybe the supercharger was at fault, along with the possible piston rings and head.
The supercharger in the '88 MR2 was a Roots type that had it's own oil reservoir. I remember how hard and expensive it was to get oil for it at the dealer. I first had to convince the parts guy that yes, Toyota did make a factory supercharged MR2, and yes, it does take supercharger oil. Talk about expensive oil. $50 for a 50mlcan! The can was just plain steel with a generic Toyota parts sticker on it. Anyway I'd be surprised if the supercharger was the culprit behind the smoke. Not only because it uses it's own oil reservoir, but at the altitude I was at during this run is somewhere around 9,000'. If I remember right the full boost on that supercharger was about 6psi. I'm not sure if there is even that much of a positive boost anymore at that altitude.