My 1998 S70 GLT started leaking oil and local mechanic saw that oil is getting down into the crankcase, causing pressure, leaks. Engine has 98K miles, so was hoping it would last a few more years.
Q: Is it better to rebuild the engine or find a used engine.
Q: where is a good place to find a used engine

WHAT? Where is the oil leak? Is it coming from the top of the head on the driver's side and running down? That is a camshaft seal and is easily replaced.

Most people don't know there is an oil separator box under the intake manifold, and when that gets clogged up with gunk your crankcase pressure is going to increase and start telling you by leaking oil every where. Hopefully not at the rear main seal at the transmission, which is an expensive fix.

You do NOT need a new engine, you need a Volvo mechanic that knows what a Volvo is. Replacing the oil separator box and vacuum lines is a 3 hour job for a good mechanic, 5-8 hours for DIY not so good mechanic, and about $150 in parts.

Get it fixed sooner than later, at a shop that works on volvos.

Klaus
--
Just driving a 1998 V70R :)

Thanks Klass,
We did replace the oil seperator box in May, then in Oct, it began to leak oil again. So, as you suggested, I took it to the Volvo dealer. They replaced mentioned the box as well, so I told them the history. So they went looking for the 'root cause'.. They found the fresh air heater element pluggeg and rear cam seals leaking. The main part was the fresh air hose at $111 plus 3.2 hours labor. Looks good today. Hope it lasts.