Oil Leak on passenger side, serpentine belt, alternator, where is it coming from?

[heyjack70]

Hi, I'm new. Thanks in advance.

 

I have a 1997 cutlass supreme, 3.1 V6. The car started leaking oil several months ago on the passenger side of the engine. It leaks more when it's hot. I can't tell where the oil is coming from, and it's getting onto the serpentine belt and splattering around, which makes it tough to localize the source. I had it at a shop; they power washed the oil off, and let the engine run, but they told me they couldn't find a leak. And it actually didn't leak after that for quite awhile. I'm guessing because it was not hot enough. Now that we're in the midst of summer, I'm leaking a fair amount of oil, and I'd like to get it taken care of. What are common things that would leak oil on that side of the engine?

[mchill07]

My 95' GP with the 3.1 V6 had a small oil leak when I bought it. After I power washed the engine, was able to pinpoint my leak in the oil pan gasket directly behind the harmonic balancer. The oil would pool around the motor mount. I torqued up the pan bolts and added some oil stop leak and It went away.

[urbex]

Yeah, I have a mysterious leak in that spot too on my Lumina. I figured it was the LIMG, but that didn't fix it when I replaced it... I can't see where it's coming from either, but it's annoying me, lol.

[19Cutlass94]

Could be valve cover gaskets, LIM gasket, timing cover gasket, Timing cover seal, oil pan gasket, head gaskets. All of those youll need to check.