need advice for differential oil for challenger

[mjf6866]

hi, i'm going to be changing the differential oil in my 09 challenger r/t 6-speed.

the owners manual calls for "mopar synthetic gear lubricant 75w90 (api gl-5) or equivalent (with mopar friction modifier - hypoid gear additive)"

what brand would you guys recommend? royal purple? amsoil? stick with mopar? anyone else?

thanks in advance.

 

[Johnny]

The Amsoil Severe Gear is a very good product, I would probably give it a try.

 

[Bill in Utah]

Originally Posted By: Johnny
The Amsoil Severe Gear is a very good product, I would probably give it a try.


+2 (from one of our site sponsors!)

Excellent fluid that performs for a LONG time.

 

[mjf6866]

ok thanks, does the amsoil severe gear oil come with the "hypoid gear additive"?....whatever that is

 

[Johnny]

It has some in it but you may still have to buy a small bottle to add more. It is the limited slip additive for the limited slip/posi-traction diff you have.

 

[mjf6866]

ok, thanks guys...i just ordered the amsoil severe gear oil and the slip lock additive they offer. i wanted to be safe than sorry. would it hurt to add the slip lock regardless if it "chatters" or not?

 

[Johnny]

Won't hurt a thing. But if you want to be sure, contact Amsoil's tech department as they are good at answering questions.

 

[mechtech2]

They may tell you to add some extra only if it chatters on tight turns.
I'd probably add a 1/3-1/2 right away and drive it.

 

[martinq]

If you want something awesome, look into Motul Gear 300.

Otherwise:

Amsoil SVG 75w90, 75w110
Red Line 75w90, 75w140