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Oil leak location

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Old 03-28-2024, 07:34 PM
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Oil leak location

Hello all,

I've been having a problem with oil leaking for a while now and just got around to getting a UV dye kit to find where it is leaking from. I thought it was the oil pan but unfortunately its not. I waited until it was dark and shined a UV light on it. It looks like its coming from the front main seal. Just wanted some conformation before I start taking things off lol.

Pics below, thx




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Old 04-01-2024, 06:08 AM
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Hard to tell from the pics but I think you’re talking about the crankshaft seal. Just had mine replaced. Lasted 20 yrs. If so, important to make sure the pulley is still in good shape. Inexpensive gasket, $200 labor. Might replace your main belt while you’re in there.
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Old 04-01-2024, 04:37 PM
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my first guess would be the half moon seals on the end of the oil pan. those seals are notorious for leaking. when I first got my car I thought I had a rear main seal leak and it ended up being the half moon seals. those things can easily mislead you to thinking you have a rear main or front crank seal.
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Old 04-10-2024, 03:44 PM
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Originally Posted by uptownsamcv
my first guess would be the half moon seals on the end of the oil pan. those seals are notorious for leaking. when I first got my car I thought I had a rear main seal leak and it ended up being the half moon seals. those things can easily mislead you to thinking you have a rear main or front crank seal.
absolutely this. in over 20 years of dealing with these ive never seen a front or rear seal leak that wasnt damaged by improper repair. upper oil pan seals? for sure. they shrink, get hard, and crack.

pull the crank pulley and take a close look at the upper seal. takes all of 5 minutes.
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