Hey guys, quick question for all of you; what are you using for lubricating fluids in your diff? I am going to do a full change on the motor oil as well as diff and was thinking about going with Royal Purple instead of the usual Mobile 1 that I always used in the VW/BMW. What preference do you have regarding this? Also, anyone heard of issues running the 75-90w gear oil in the diff instead of the straight 90w that Honda recommends? Any help is greatly appreciated.

 

i use eneos 5w-40 and torco sgo? for the diff. i acutally did it today. and redline mtl for the trans the trans fluid is new to the car. its been honda mtf for a while but thats what we had lying around the shop and it seems really good so far. the engine oil we actually dyno tested on my car and it picked up a solid 2whp on my car. and it is considered a true synthetic from group 4 stock unlike US market mobil and castrol.

 

I use the new Honda MTF, Mobil 1 for the Diff and started using Castrol Syntec. I used to use Mobil 1, but my car would just burn this stuff. Looks like I don't burn at all or very much with Castrol.

Not very much input for the diff...I've only used Mobil 1. Let us know what you choose and share the info..Please.