Do I need to clean out oil pan?

The 1999 to 2002 Saabs had oil sludge problems. Why do you not trust your Saab mechanic? The price seems a little high, maybe you can get a better price at another garage? I would say around $500 is fair.

At the price you are paying for the car I would use Liqui Moly brand oil flush a couple of times and save the $850. Change your oil every 3,000 miles to keep sludge under control.

It's not a huge job to take the sump pan off, if you've got access to a pit or ramps. Treat it to a good oil flush and drain the oil, remove the front section of the exhaust (cat to exhaust manifold), loosen off the engine subframe (no need to remove it, just lower it slightly), remove the flywheel cover plate and the sump pan bolts then you can manouever the sump pan out. Clean it out, if it's got the usual baked on muck you can use oven cleaner ( the type you use on COLD ovens) to dissolve the crud. Don't leave the oven cleaner on for too long though as it's pretty aggressive on aluminium) ....wire brush as required and plenty of clean fresh water to rinse it really well. Remove the oil pickup strainer and give it a good clean out too. You'll need to replace the o rings as you reassemble it, make sure the pan / engine block mating faces are spotlessly clean and apply some anaerobic joint paste ( I use "Dirko"), don't be over- generous with it as excess will squeeze out and finish up inside the sump, and end up blocking the oil pickup filter again. Reattach oil pan to the block, refit flywheel cover plate and tighten up the subframe bolts then reassemble exhaust (don't use any exhaust jointing compound before the cat and O2 sensor as you'll damage them) . Replace the oil filter and Refill engine with fresh oil. Job done. Course, when you take off the sump pan and you happen to see any trace of copper shavings then you've got major problems as it's likely that your crankshaft is toast...check for any play on crankshaft journal bearings / big ends while you're in there. Cheaper to hit a breakers yard for a replacement engine (around £ 200 in the uk) than regrind crankshaft, and big end bearing shells etc)