OK.. many moons ago I remember which allen key to use for the */C screw but I don't remember now.. anyone know which size it is??

Secondly. the GM parts guy talked to a mechanic and said I don't need more then 1 bottle of */C oil the most.. lookin at the bottle, I don't think so.. I have to change mine and Tamaras so I bought 3 bottles.. think I shoudl have enough??

P.*. it'* M90 */C on L67 series II.. but I'm sure most of the gearheads knew that.. just in case if the */C screw size is different

An M62 is 4.5mm. Is M90 the same. Three bottles is probably enough for two. But if you want to flush, you'd need a few more.

Drifter, my '97 is a torx 30

torx 30?? time to take a closer look when I get a chance later. How many bottle would be needed to do a flush on both cars?? I think it'* time to change the oil on both */C..

Torx? That'* an aftermarket plug. Stock plugs are all hex.