I know this has been asked before but I can not seem to find a definite answer searching.
For those with an ARB locker, what gear oil are you using?

I've used Mobil 1 75-90 Synthetic up until now. Is this still ok to run or should I be using a heavier oil and/or different oil all together?

Appreciate the help.

 

Pretty please? I'm through my new gear break-in and need to switch out in the next day or two.

 

The weight is fine, not sure about using synthetic with the locker. could you ask the the shop that did the install?

 

pretty sure the instructions say synth only. i think heavier too like 75-140

 

^^ Same as PCH, Synthetic and I would go to 75w140 also. I am running Amsoil Severe gear 75w140 in both my ARB'd 44's.

 

so the vote is 75/140 synth? no one else?

 

X2 I've had that in my front for quite some time, hasn't even changed color yet.