WHATS SYMPTOMS IF OIL RINGS GONE OR TURBO SEALS?
 

Whats the symptons if oil control rings gone or if turbo seals knackered?

Blue smoke (oil being burnt by engine) out of the exhaust, I think.

To check turbo, take car on a run and get up to normal temps etc. Then return home, and leave to idle for 5 mins. Then get a mate to rev engine while you observe exhaust - blue or bluey-white smoke probably indicates turbo thrust bearing failing.