Rear main?
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Winching
Joined: Jul 2011
Posts: 522
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Rear main?
I crawled under my 1995 discovery one with a 3.9 in and it today to find that I am leaking oil (whats new?) from behind the oil pan but in front of the transmission. It is motor oil, not transmission fluid. I think it is the rear main? I thought if I am in there and have the oil pan off, should I just put a new seal on whatever is leaking? Depending on what that is. I will try to get some pictures to better clarify what I am talking about.
THIS WEEK: I have to take off the front cover ect and replace my oil pump because of low pressure at warm idle. I also plan on taking the oil pan off to look at the oil pump pick up tube.
Thanks in advance
THIS WEEK: I have to take off the front cover ect and replace my oil pump because of low pressure at warm idle. I also plan on taking the oil pan off to look at the oil pump pick up tube.
Thanks in advance
You cannot just replace the rear main engine seal like that, you need to remove the transmission and the fly wheel.
First check to see if your PCV is clogged, if not then try a bottle of White Shepard oil stop leak and seal conditioner, you can get it at Advance Auto, I used it and it works great.
BUT you MUST drive for at least a hour after adding it to your crank case.
First check to see if your PCV is clogged, if not then try a bottle of White Shepard oil stop leak and seal conditioner, you can get it at Advance Auto, I used it and it works great.
BUT you MUST drive for at least a hour after adding it to your crank case.
Super Moderator
Joined: Jan 2011
Posts: 16,322
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From: Savannah Georgia
Rear main seal requires tranny removal. There is a "fix" product that is called White Shepard, it has reported good results. Seems like I saw some reports about checking the lock washer or loctite that keeps the pick up tube in place, once you are that far.
Thread Starter
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Winching
Joined: Jul 2011
Posts: 522
Likes: 1
You cannot just replace the rear main engine seal like that, you need to remove the transmission and the fly wheel.
First check to see if your PCV is clogged, if not then try a bottle of White Shepard oil stop leak and seal conditioner, you can get it at Advance Auto, I used it and it works great.
BUT you MUST drive for at least a hour after adding it to your crank case.
First check to see if your PCV is clogged, if not then try a bottle of White Shepard oil stop leak and seal conditioner, you can get it at Advance Auto, I used it and it works great.
BUT you MUST drive for at least a hour after adding it to your crank case.
Baja
Joined: Mar 2010
Posts: 5,584
Likes: 7
From: Pittsburgh PA suburbs.
Have you tried tightening the valve cover bolts? I had a lot of oil puddling up on top of the water pump and thought I was going to have to replace the valley cover gasket, even went so far as to buy the gasket kit. Then I got an 8mm deep well 12 point and tightened the valve cover bolts. They had all worked themselves rather loose. TIGHTENING SOLVED THE OIL LEAK.
Then I got antifreeze puddling up on top of the water pump. THAT TURNED OUT TO BE THE SHORT LITTLE HEATER HOSE RIGHT BEHIND THE ALTERNATOR.
Then I got antifreeze puddling up on top of the water pump. THAT TURNED OUT TO BE THE SHORT LITTLE HEATER HOSE RIGHT BEHIND THE ALTERNATOR.
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Winching
Joined: Jul 2011
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Here are some pictures: IMAG0194 | Flickr - Photo Sharing!
IMAG0193 | Flickr - Photo Sharing!
IMAG0196 | Flickr - Photo Sharing!
IMAG0193 | Flickr - Photo Sharing!
IMAG0196 | Flickr - Photo Sharing!
Thread Starter
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Winching
Joined: Jul 2011
Posts: 522
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I bet it isn't even worth missing with until the transmission goes.
If that is all you are loosing I wouldn't worry about it.
Switching oils (to a different brand) can cause temporary oil leaks.
So if you switched recently it may go away after a oil change or 4.
If you want to keep your driveway clean then put a piece of cardboard under the truck when you park at home.
Once that cardboard is soaked throw it away and use a new piece.
Switching oils (to a different brand) can cause temporary oil leaks.
So if you switched recently it may go away after a oil change or 4.
If you want to keep your driveway clean then put a piece of cardboard under the truck when you park at home.
Once that cardboard is soaked throw it away and use a new piece.