I have two ongoing problems with my 2000 V70. The first is a persistent oil leak even though my mechanic replaced the oil pan seal recently in an attempt to fix it.
The second is fairly new and is a noise from the rear suspension that sounds like a spring sproinging .
You need another mechanic because he didn't diagnose the source of the leak. Oily substances could be coming from several places.
Could be from many sources, including some that have nothing to do with the suspension. Best to take it to a dealer or good Volvo repair shop where they can pinpoint the cause of the noise.
Oil pans don't have seals, they have gaskets. Seals are something that prevent leaks around shafts that turn. I have never had an oil pan gasket leak, but I have had oil seals leak. I am surprised that your mechanic gave up so easily without knowing what he/she was doing.
Well if you want to get technical, one of the definitions in the dictionary for "seal" is "A device that joins two systems or elements in such a way as to prevent leakage." so I think by definition the oil pan gasket could be called a seal.
That said, I've had pan gaskets leak, though most commonly because one or more of the bolts was either loose or over-tightened.
I usually order my parts from a parts catalogue, not the dictionary. There the correct names are engine oil pan gasket, engine oil drain plug gasket, cylinder head gasket, valve cover gasket, rear main seal, and oil seal. And we shouldn't forget the crank seal cover gasket, steering gear seal, crankshaft seal, speedometer cable seal, seal rings, water pump gasket, oil pump seal, valve cover spark plug seal, camshaft seal, o-rings, pinion shaft seal, valve stem seal, etc.
And with a good mechanic, they are kept torqued. Seals wear out, gaskets usually don't. The pan gasket should be replaced every time the pan is dropped since it is such a cheap item and is frequently damaged during removal of the pan. Actually most gaskets and seals are cheap. Some are hard to replace though.
The oily substance could be motor oil, power steering fluid, coolant or brake fluid. It was clear the O.P. had little experience and knowlege of what goes on under the hood. Rather than have him try to trace the numerous good and bad suggestions that will inevitably come out in a discussion like this he would be better served having a good mechanic do the analysis and repair. That way he can get the problems corrected. Your contributions to date have consisted of little more than sniping.
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.