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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

rear seal

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Old Apr 30, 2022 | 05:24 AM
  #1  
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rear seal

How common is a rear seal oil leak on a 1989 f250 with a 5.8? I've heard it is very common.

I have an 89 in good shape, with only 60,000 miles. Problem is the truck has sat for quite a while. I really only need it for snowplowing my 800' driveway, I've recently been working on it, fixing brake lines, power steering hoses. fuel lines etc. I don't want to dump time and $$ into it if a bad seal is likely.
 
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Old Apr 30, 2022 | 05:58 AM
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Well if/when it starts weeping out the rear main, you just to off the oil periodically and go about your business. All of these engines eventually develop a rear main leak (hell front one too but that's easier fix), unless it's an Exxon Valdez type of failure (never seen or even heard of one) it's just a nuisance and not much more.

What you should be more concerned about is your transmission, plowing is rough on them. I hope you're using your transfer case's low range while pushing the snow, that extra gearing helps a lot with transmission loads.
 
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Old Apr 30, 2022 | 11:01 AM
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The truck is nearly 35 years old...so is any factory installed rubber. It shrinks and leaks. Replace it or let it leak as there is nothing else you can do.
 
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Old Apr 30, 2022 | 02:38 PM
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Originally Posted by Hit Man X
The truck is nearly 35 years old...so is any factory installed rubber. It shrinks and leaks. Replace it or let it leak as there is nothing else you can do.
I guess your right, a little leak I can live with.
 
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