I just got my gears in installed and am wondering what you guys use?
is full synthetic worth the money? i am also going to get the friction modifier from ford this afternoon. thanks
I replaced the gears myself in my garage.
i'm all done and just need to put the fluids in. i was just wanting some recommendations....full synthetic or not.
and what it would actually do for the extra $$$
Mobil 1 75w90 Full Syn Gear Lube w/FMS Friction Modifier...Reason: It will definitely withstand more punishment than just conventional fluid and most new Hi-Po vehicles are now shipped w/syn fluid in rear ends and/or engines anyway!
Whatever you choose (synthetic here), I like to put it in for a little while, heat cycle everything a few times and put some miles on it, then change fluid again.
Break your new set up in with some conventional 80W90 gear oil first and after 400+ miles throw some synthetic in her. Redline make's a really nice Synthetic 75W90 with friction modifier already added. Since you already bought some Fric. Modifier they also have a Synthetic 75W90 that has no additive in it at all available.