@flu – if the steam from the exhaust has a ‘funky’ smell combined with a bit of an anti-freeze smell, it is getting into the cylinders and being burned. If it is just an anti-freeze smell, then it is post combustion. With the way turbos are designed, the water jacket is outside of the bearings and you will not leak into the exhaust. You would get water in the oil before leaking into the intake or exhaust. See http://www.sjmautotechnik.com/trouble_shooting/turbo.html