TLR has
http://www.tlracing.com/ProdInfo/Fil...uning_Tips.pdf
page 6 starts on differentials / oil
Front
Thinner front differential oil increases off-power steering, but if the oil is too thin the steering
will become grabby and inconsistent. Thicker front differential oil increases off-power stability
and on-power steering.
Center
Thinner center differential has less forward drive, can unload more under acceleration and is
easier to drive on rough and slick tracks. Thicker center differential has more acceleration, in-
creases on-power steering and less off-power steering. Thicker center differential is better on
high-bite/smooth tracks.
Rear
Thinner rear differential has more corning traction and increases steering in the middle of the turn.
Thicker rear differential has less steering in the middle of the turn and more forward traction.