Differential fluid change
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Differential fluid change
I have a 95 F150 2wd. I have the inline 6 engine. I assume I have the 8.8 rear end. I will be changing the fluid and gasket. Haynes manual just specifies a ford part number for the recommended fluid and does not give viscosity. Could someone please tell me what viscosity I should use? I have heard before about a rubber gasket that is made for these rear ends and can be used in place of the regular cork gasket. Does anyone have any information on this?
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Joined: Mar 2001
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From: So Cal
I am guessing since I don't have an 8.8 . My 94 has a Sterling I think 10.something?
Seems like most of the rears around those years used a 75W90 and I think it specifies semisyn or syn. Older rears seemed to lean to straight 90 or 90W140, but I think that may be too thick for your newer diff.
Don't know if you need limited slip additive, I would guess not. But if you do, you can find it in big toothpaste tubes.
I have used the cork and rubber gaskets on different vehicles. I think I like the rubber a bit better. Seem less prone to getting cut while torquing. The gotcha I have seem with rubber is that sometimes it will squeeze out whilc torquing and then you have a big leak.
What I do is use some sealer, usually something like Permatex. I put the sealer on to the cover per directions and then put the gasket on that and let is sit a bit so it kind of keeps the gasket from squirming around.
Good Luck,
Jim Henderson
Seems like most of the rears around those years used a 75W90 and I think it specifies semisyn or syn. Older rears seemed to lean to straight 90 or 90W140, but I think that may be too thick for your newer diff.
Don't know if you need limited slip additive, I would guess not. But if you do, you can find it in big toothpaste tubes.
I have used the cork and rubber gaskets on different vehicles. I think I like the rubber a bit better. Seem less prone to getting cut while torquing. The gotcha I have seem with rubber is that sometimes it will squeeze out whilc torquing and then you have a big leak.
What I do is use some sealer, usually something like Permatex. I put the sealer on to the cover per directions and then put the gasket on that and let is sit a bit so it kind of keeps the gasket from squirming around.
Good Luck,
Jim Henderson
