Best Diff Fluid & ATF for Track Usage?
 

Howdy,


Right now I'm running Redline D6 ATF in the trans and AMSOil SevereGear 75W90 in the diff. I've heard mixed reviews of the AMSOil diff fluid, and I'm considering what my other options are. I'm relatively happy with Redline D6 in the trans though. I have a trans cooler, but I'm currently not running either an oversized diff cover or any sort of diff cooler.


I'm considering either Redline 75W90 GL-5 or Motul Gear300 75W90. I know the Motul is a popular option on this platform. I'd just like some feedback from the community before I do my next fluid change.


Thanks

Motul Gear 300 LS 75w90 for the differential.

I thought we didn't need the friction modifiers in the LS because it's a Torsen not a clutch-type LSD? I don't think they'll hurt anything though.

Correct, but I'd rather not be a guinea pig.