Changing trans oil on a G35 6MT: NOTE:Do NOT use GL5 transmission fluid. It will damage the synchros in the Nissan transmission. You need GL4 fluid. Most fluid you buy at autoparts stores is GL5. I recommend a mixture of 2 quarts Redline MTL (70W-80) and 2 quarts Redline MT-90 (75W-90), as Nissan calls for […]