Originally Posted by
Cody227
A bit yes, but a diff-filling per day no!
The worst is: i can't test it more than 1 day, because the race is this week. My only chance is to use the bearings with metal-seals from the idler-gear. Even the diffs without bearingmod from a friend dont leak as much as mine.
I ended up experimenting with grease instead of fluid for a while to minimize maintenance and it worked remarkably well. In the rear I would run the diff 2/3 filled with AE black grease and the front diff was also 2/3 full, but a 50/50 mix of
racers edge heavy duty diff grease and AE black grease. This made the car feel very close to 10k/5k front/rear and it would never leak. You don't want to pack the diff full, or it can lock up. Just enough so that the centripital force keeps the spider gears mostly submerged. This was with the center diff, so if you are running the standard slipper you might fare well with straight up Racers Edge grease in the front to get close to a 30k feel.