Rear main seal replacement
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Mountain Pass
Joined: Jan 2019
Posts: 200
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From: PNW-Western WA
Rear main seal replacement
Anyone have experience with replacing rear main seal in a 1980 F350 DRW 2WD 400 C6 w/ stock exhaust? I looked under it tonight and I am not sure I can get the oil pan far enough forward to get to main cap/seal.
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Joined: Nov 2013
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As best I can determine, Ford did NOT recommend the in-vehicle process on the large-block V8 in a pickup. The factory manual doesn't specifically say you can't, but it looks that way when reading between the lines.
Gory details here:
https://www.ford-trucks.com/forums/1...on-pulled.html
My experience with the 351W here, which has better access due to the smaller dimensions:
https://www.ford-trucks.com/forums/1...y-84-351w.html
Not exactly fun, but it was doable.
Gory details here:
https://www.ford-trucks.com/forums/1...on-pulled.html
My experience with the 351W here, which has better access due to the smaller dimensions:
https://www.ford-trucks.com/forums/1...y-84-351w.html
Not exactly fun, but it was doable.
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From: Denver Metro Area, CO
Lead Driver
Joined: Apr 2002
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My 6.9l diesel had a rear main leak. I tried the blue devil rear main sealer additive and it stopped the leak. It also stopped leaks around the pan gasket. It's only been about 3000 miles since I tried it, but still working good. Worth a try if you need to buy time for the money. Company claims it's a permanent fix with one application. The price was cheap. Before everyone piles on about snake oil...yes not as good perhaps as replacing the seal. I'm very pleased with the results so far.
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kurtzdiesel
1999 - 2003 7.3L Power Stroke Diesel
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Nov 8, 2007 01:43 PM
