[QUOTE=ezbme;4119495]What fluid should I use for my diff, being that I have a G37s? I saw someone mention Motul 75w90. I have used Amsoil in the past.[/QUOTE

I used Amsoil Severe Gear 75w90. Even use their signature series motor oil. Love their stuff.

 

Thanks, why the Severe Gear Oil? I figure I will probably use the long life.

 

To be specific, I have a 11' g37s sedan. My car comes with the vsld, so for that Amsoil recommends we use the severe gear.

If you don't have the Vsld, you can always go on their website and they'll recommend what you need.