My 740T blows glue/grey smoke after it's been sitting for more than a few hours. After it's blown out a big puff of smoke (usually while waiting at the first set of lights about half a mile down the road from work), its fine for the rest of the drive, not even while waiting at all the other intersections on the way home. I don't think its guides/seals because it only does it once each trip, not every time there is high vacume, and if it was rings, it would smoke under load, which it doesn't. Could it be the turbo?
TIA
Roller T
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