What's your method for filling the rear diff? What weight u run?

dwcopple

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Gonna be getting the car out of storage at the end of March and plan to do some maintenance before putting it back on the road. What is the consensus on the best way to fill the rear diff? Is there any way to do it cleanly? Does a bottle fit anywhere under there? Buy a screw on pump?

Also curious if people are running 80w90 or 75w140 in there rear.

Thanks!
 

lwarrior1016

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I use 75w-140 and fill it with a Suction pump. It looks kind of like a grease gun tube with a hose on the end. Take the cap off, fill it up, insert hose into diff fill plug, and push the oil in.
 
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dwcopple

dwcopple

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I use 75w-140 and fill it with a Suction pump. It looks kind of like a grease gun tube with a hose on the end.
ok, I've got one of those. I have the 3:08 limited slip. Do you recommend the additive or just use a gear oil that says it's okay for LS diffs?
 
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dwcopple

dwcopple

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I ended up with 75w90 full syn. I used the red/black transfer pump.
 

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