DIY: Transmission Oil Change

cossie1600 · 10-08-2011, 02:04 PM

Thanks for the write up. I did this at 13931 miles. Just a couple of note I want to add.

#1 My transmission hadt always been notchy since it was new, I was too cheap and lazy to do this job. When it was completed yesterday, the transmission felt so much smoother. I still get the occasional notch in second, but it was nowhere close to what it was. All the other gears felt smoother. If I were to do over, I would probably change it after a few months.

#2 My car has about 12 track days, 450 autox runs and some easy street miles, the fluid were completely black after 13931 miles.

#3 I used Amsoil 75W90 GL-4. Please make sure you use GL-4 as the brass in the transmission doesn't like GL-5 fluids. My car had 3 quart coming in, 3.5 went back in.

#4 I bought my fluid pump from Harbor Freight, it was like $6.99. The pump is excellent as it is fast and doesn't leak.

#5 The drainplug and fill plug are 9mm hex if i recall correctly, maybe 8mm, but i am pretty sure it is 9mm

Differential fluid tonight

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10-08-2011, 02:04 PM	#10 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 31	Thanks for the write up. I did this at 13931 miles. Just a couple of note I want to add. #1 My transmission hadt always been notchy since it was new, I was too cheap and lazy to do this job. When it was completed yesterday, the transmission felt so much smoother. I still get the occasional notch in second, but it was nowhere close to what it was. All the other gears felt smoother. If I were to do over, I would probably change it after a few months. #2 My car has about 12 track days, 450 autox runs and some easy street miles, the fluid were completely black after 13931 miles. #3 I used Amsoil 75W90 GL-4. Please make sure you use GL-4 as the brass in the transmission doesn't like GL-5 fluids. My car had 3 quart coming in, 3.5 went back in. #4 I bought my fluid pump from Harbor Freight, it was like $6.99. The pump is excellent as it is fast and doesn't leak. #5 The drainplug and fill plug are 9mm hex if i recall correctly, maybe 8mm, but i am pretty sure it is 9mm Differential fluid tonight