ok lets get this straight. dont use motor oil, atf, or whatever. Either use honda oem mtf fluid from the dealership. if u plan on high revvin all the time like we do, most def use gm synchrmesh!! its the best stuff out there for our application. here is the part number. 12345349. its like 12 bux a quart not 25. also the synchromesh at autozone is not the same. that stuff is brown lookin while the real gm stuff is burgandy. i rather pay the extra buxs to make sure it right.