I don't think it would do much in the tranny as they use an ATF fluid which is naturually more cleansing on metal, and also you wouldn't get temps in the g'box that would cause carbon buildup, which this stuff is supposed to remove in the first place....

2000 SVT Turbo 295hp/269ftlb@12psi #1 for Bendix Brakes Kits! Knuckles rebuilt w/new bearings $55 AUSSIE ENDLINKS $70 Gutted pre-cats $80/set A lack of planning on your part does not constitute an emergency on mine!