which rear axe did my car have ?
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Junior User
Joined: Sep 2009
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which rear axe did my car have ?
hi
I need help
my car is a F250 1999 7.3l Super Duty, but I don't have any ideas which rear axle I have. I need new lubricant for my rear differential and that's the reason why I need the axle type 
Thanks a lot
I need help
my car is a F250 1999 7.3l Super Duty, but I don't have any ideas which rear axle I have. I need new lubricant for my rear differential and that's the reason why I need the axle type Thanks a lot
Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
Jack up the rearend and spin a tire. if they spin in two different directions, any 75W90 gear lube will work.( I prefer Mobil one synthetyic) if they both spin the same direction, you have a limited slip. make sure you add some limited slip additive thats Ford compatible.
Thats of course if your changing all of the fluid. If your just topping off, I wouldnt worry to much about the additive unless your really low.
Mobil One syn doesn't have enough additive, so adding some extra is a good thing. this is what I used. (it is Ford compatible)
Thats of course if your changing all of the fluid. If your just topping off, I wouldnt worry to much about the additive unless your really low.
Mobil One syn doesn't have enough additive, so adding some extra is a good thing. this is what I used. (it is Ford compatible)
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