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What rear end oil?

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Drained out oil to do suspension work and need to find out what oil to put back in. Car will see 2 track sessions a year and hopefully a little more autocross now. Other than that it will be a weekend driver.

Looking for suggestions on what kind of rear end oil to put in. OEM good enough?
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Gibbo205

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The car looks like a pp. so you have the Torsen and you don't need a friction modifier.
Amsoil synthetic severe gear 75w-90
 

whatsup62

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The car looks like a pp. so you have the Torsen and you don't need a friction modifier.
Amsoil synthetic severe gear 75w-90
This is what im running.
 

dgc333

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If you go to the Ford Racing web page and look at the rear end gear kits for the 8.8 they come with Royal Purple 75w-140. The installation instructions also recommend 75w-140 gear oil.

Also back in 05 Ford issued a TSB that stated any time an 8.8 was serviced to use 75w-140 gear oil.

When I changed my rear end oil at 5k miles I used 75w-140.
 
 








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