Extensive PCV job w/oil sump cleaning

[geoduck]

I'm in the middle of a PCV job on a 2004 XC70 with 177,000 miles and the oil return passage was completely blocked so I've had to take the oil sump off to clean it. I have the oil seal kit and will replace the necessary o-rings, I have Volvo chemical gasket, and I've read the write-up in the how-to section but are there any other tidbits of advice I should know?

Also, when I was showering after being under the car most of the day I found the remnants of a tiny copper o-ring/gasket (about the diameter of a large pen) in my hair and I'm wondering where it came from. I pulled the intake and PCV system the day before so I'm pretty sure it is from pulling the oil sump but I'm not sure.

Thanks,
Kelly

[JRL]

Bunch of O rings everywhere
Oil pan O rings
O rings in the PCV
Etc

[jda2000]

that little copper o-ring probably came off the PCV nipple under the intake manifold. One goes there and is easy to drop and loose and not realize something goes there.

[Xheart]

Pictures?

[geoduck]

Thanks for the replies. Sorry, my hands were too oily to get any pictures and I lost the little copper o-ring down the drain. It was much smaller than the copper rings that are used where the two banjo bolts on the PCV system go -- I'd say less than 1cm in diameter.

[geoduck]

Mystery solved - it was not, in fact, a small copper o-ring but a piece of very hard varnish/old chemical seal material (that looked very much like copper) that had formed in the slight countersink of the oil sump bolt holes in the block. When I got back under to clean the gasket surface I noticed a bunch of the holes had these little rings. Sorry to waste your time!