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Frothy yellow residue on my oil fill cap of my 99 Jeep Grand Cherokee.?
Hello, When changing my oil on my 99 Jeep Grand Cherokee (V8-5.7--118,000 miles) I discovered a yellow "frothy" residue on the bottom of the oil fill cap as well as loaded in the pcv valve. No sign of anything in the oil itself as well as not on the dipstick. I've seen posts about short trips...