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I've always had the smallest leak on my rear main seal. It was a very small leak, it didn't really even drip. It never even left a drop on the garage floor, just the bottom of the bell housing was damp. Thus I never really paid much attention to it. About 6-7 months ago I decided to try PP and...

I have a light knock on a cold start-up that probably last 30-60 seconds. Kind of sounds like marbles rattling around. Very similar to a diesel engine. I've never really noticed it before. I could have just never paid attention, but I doubt that. I seem to notice things like that. Anyways, I...

The front diff in my 2003 Jeep liberty recommends a 75w-140 synthetic gear lube. It is a Dana 30 aluminum diff. However, the owners manual for a 2005 recommends 80w-90 (non-synthetic) for the front. They are the exact same differential, gear ratios, part numbers, etc. The front is only under a...

Here is my first report from my 2003 Jeep Liberty. There was 28,808 miles on her when I changed the oil. The oil was run for 4500 miles and was Mobile One 5w-30 EP. I believe I ran this engine a little hard. I towed a 2000lb+ trailer for probably over 2500 of those miles. Had to push the engine...