I just blew my turbo exhaust seal last week--for no real apparent reason (like beating on it),,,and, you can't imagine the smoke out the exhaust--even at idle after I pulled off road. I had pulled over right away (after all smoke out exhaust), within 2-3 blocks, shut it down & determined it was likely the turbo--not rings n other stuff...
Checked oil, smoked it 22 miles home, used 1/2 qt oil for trip, & was lucky I did not get pulled over by P-O-L-I-C-E for excessive pollution
It would not come up into boost either...
Pulled inlet pipe, compressor wheel free tho, removed oil feed line, replaced inlet/ MAF, started up (idle=20 sec or so) & no more excessive smoke... Pulled turbo, returned to Limit Engrg--still under warranty--who the hell knows what happens to these things. Of course, turbo seized (not too surprisingly) in approx 20 sec I tested it w/ oil line disconnected--but I proved it was coming from turbo...
Believe me, if that much oil was coming from within the engine/ combustion chamber--a plug (or plugs) would certainly have fouled-out...
Sorry = long-winded...back under my rock now...:frown: