i don't know about the sc300's but a lot of the supra guys like to use the stock toyota v160 gear oil for the tranny. if you plan on swapping out the motor and put the getrag in there, stick with the toyota gear oil. i used mobil 1 synthetic gear oil for the rear diff.
Originally posted by 1BadSC300
sung - have you used "redline" manual tranny and diff fluid before? what do ya think...worth it?