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I drive an MN6, but all the procedures I find are for A4 vettes. I also read that I don't have to change the fluid in the MN6, but @ 70k miles, I figure new fluid can't possibly be a bad thing.
Is there a write-up somewhere for changing the fluid for manual transmissions, or is it the same as the auto's? Forgive the newb questions, any help is greatly appreciated.
It is very simple, there is a drain plug on the bottom of the transmission and a fill plug on the side. The only thing is you need a pump to pump it in, as there is no room to pour it in. I changed mine at 80,000 miles and it shift so much better after is was changed. Just check the book and make sure you put the right stuff back in. It takes ATF fluid.
If you can afford a few more $, then try Royal Purple Synchromax or GM Synchromesh fluid. It slightly improves shifting in most manual C5s over regular ATF.
The fill plug is on the driver's side of the transmission about halfway up and halfway back. Make sure you can get this open before pulling the drain plug. The drain plug is on the back of the transmission on the passenger side. They can use a 3/8" drive ratchet on both these (make sure you have a short extension). The tranny will take just under 4 quarts of auto tranny fluid. It's easiest to fill just until the fluid starts to come back out the fill plug. To summarize, the steps:
Open fill plug
Open drain plug and let drain
Clean and replace drain plug
Pump in 3.5-4 qts ATF
Replace fill plug
Enjoy the new tranny
I always take for a drive and re-check the fluid level to be safe and make sure there aren't any leaks
Buy a good quality pump. I bought a plunger pump that fits on top of the bottle, and it only lasted about 3 pumps before the top of the plunger broke off. If you are careful to push only straight down on the middle of the plunger you should be alright.
Mine broke and I was stuck by myself with no fluid in my transmission, so I had to go to a backup plan.
I ran a fill tube through a hole in one of the bottle caps, and connected my air compressor to another small air line to the top of the bottle. Then I used air pressure to push the fluid up into the transmission. It worked out better than the manual pump once I got it set up.