Recently got the wagon off E-bay. (seller goes by name of viorea-- watch out). When the engine warms up, there is a TON of blue smoke on acceleration. Took MB tech 2 seconds to say "valve job and/or seals and rings". Independent mech. says it'd be better all the way around to replace the engine.

Is it possible at all that it could just be old seals?

If not, used engines from that year seem to average around 100,000 miles. Wouldn't it still need a valve job in another 20 or 30 thousand?

This is my first MB purchase (I am fighting the urge to make it my last) and any advice or info whatsoever would be most greatly appreciated.

TIA,
Scott