Hello... I have this 83 chevy that went a few years without running. The mechanic got it going again, but he figures it has either stuck oil rings, or needs some valve seals. ...The engine has lots of power, but if you rev it up, there is a puff of blue smoke on deceleration. The mechanic figures that if it was valve seals, there should be an instant puff of blue smoke upon starting the engine (after sitting a while). ..Which there isn't. Any suggestions? ...Incidentally, there is no blue smoke while the engine is running normally.
Also... He feels that if it is stuck rings, he had me put about a pint of automatic transmission fluid in the engine, to see if it might unstick them. ...Any suggestions, as to something better to use -- that isn't too hard on the engne. Thanks for any help. ....Jon.