Gear Oil change how-to? Options

[Syaoran]

So I'm ready to do a gear oil change along with an oil and filter change, but the thing is I don't know where the plugs are exactly.

I tried making sense out of the BGB but I can't visualize it. Can I pour in the gear oil through the reverse light switch hole? (after removing the switch)

EDIT: also, how much gear oil should I use? I've seen 2.5qts and 3.5qts in different places... so I'm kinda confused. Using Synchromesh by Pennzoil

This post has been edited by Syaoran: Aug 24, 2012 - 10:58 AM

[Special_Edy]

There is a plug on the bottom passenger side and a plug on the front near the top. I think they were something like 21mm on my 94 GT.

If the car is on a level surface then all you have to do is fill till it starts overflowing, if the car isnt level then its apx. 2.6 quarts though you may wanna double check me on that. Pennzoil syncromesh is what Im running(its fixed my 3rd gear shift) and I think 75w-90 is the viscosity.

[Syaoran]

There is a plug on the bottom passenger side and a plug on the front near the top. I think they were something like 21mm on my 94 GT.

If the car is on a level surface then all you have to do is fill till it starts overflowing, if the car isnt level then its apx. 2.6 quarts though you may wanna double check me on that. Pennzoil syncromesh is what Im running(its fixed my 3rd gear shift) and I think 75w-90 is the viscosity.

So you've had no issues with the Synchromesh so far? How long has it been since? I've read around MR2 forums (lots more info) that the S54 likes MT-90 better but that Synchromesh will work.

Thanks for the info, I'll go and see if I can find the fill plug before removing the drain plug.