Originally Posted by lobuxracer

The fluid level in the gearbox. On the IS F, the gearbox is very sensitive to low fluid levels. Even a few ounces low caused flaring under certain conditions. The GS F gearbox has not had any flare issues I've noticed, but the clutch engagement has been noticeably clunky on the GS F compared to the IS F. Both have the AA80E gearbox, so it pretty much has to be the TCU programming or the fluid level might be a little low. No way to be sure without setting the fluid level (you can't actually "check" it, you can only adjust it from too much to just right).

Originally Posted by gsfdream

is there a tranny dip stick or fill hole or anything to measure if fluid is low or not?