This is topic Rear end Fluid in forum Tech Talk at Northern California Ford Owners .
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Posted by sqwznss (Member # 3796) on
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What is needed in the ford 8.8 inch rear? How much? Does it need a limited slip / posi additive?
I have recently put GM ends on it so it fits in my Camaro as the 10 bolt is very weak, but don't know what is best to run in it.
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Posted by Fostang (Member # 3752) on
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You put the ends on the rear?
I sure hope you used a jig if so.
Posted by mtbaughs (Member # 4052) on
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If its the standard Ford traction lock 8.8 I like to run amsoil synthetic gear oil in it along with one bottle of friction modifier from Ford. The friction modifier must be added. Add it first than the gear oil
Posted by sqwznss (Member # 3796) on
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Fostang.. Yes a jig was used.
Anything wrong with say castrol syntec gear oil? Will do on the addative.
Posted by Black94 5.0 (Member # 655) on
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75w-90 GL5 , Castrol, Mobil, it's all good...I like to use the Ford Friction Modifier, but you can get the same kida thing from your local parts store... ![[patriot]](graemlins/patriot.gif)
Posted by Fostang (Member # 3752) on
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The posi additive doesn't get along to well with synthetic oil.
Plus if you have new gears in the diff. it's better to use organic.
I'd stick with organic. Friction modifier from ford is better for steel clutches.
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