Trans service
Thread Starter
Instructor
Joined: Apr 2014
Posts: 136
Likes: 15
From: TN
Trans service
Newbie C5 owner. Vette has 107K on it changeing engine oil on it this weekend and thinking of transmission fluid too. Should I drop pan and do filter and gasket or just drain and refill? No service history, no trans issues, just want take proper care of it,love the car Thanks in advance!
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
I recommend to change and replace the filter. I do not recommend you flush the system.
What I do in automatics is after driving for a while is to later drain and refill since the original drain did not get all the fluid out from the lines, cooler, and converter. Just do it until what you drain out looks the same color and what you are putting in. Normally once is enough unless the original fluid you drained was badly burned.
Some people do the drain and refill/filter and then disconnect/redirect the return line into a bucket and run the car on a lift or jackstands. They let some dump and then put more fluid in. They do this until what comes out looks the some as what goes in. It works, I just prefer my approach.
What I do in automatics is after driving for a while is to later drain and refill since the original drain did not get all the fluid out from the lines, cooler, and converter. Just do it until what you drain out looks the same color and what you are putting in. Normally once is enough unless the original fluid you drained was badly burned.
Some people do the drain and refill/filter and then disconnect/redirect the return line into a bucket and run the car on a lift or jackstands. They let some dump and then put more fluid in. They do this until what comes out looks the some as what goes in. It works, I just prefer my approach.
Racer
Joined: Aug 2010
Posts: 349
Likes: 7
From: San Diego CA
- You need to fill it while engine running, and the exhaust will be hot, use some sort of heat shield.
- The tranny needs to be in a particular temp range and it you dilly-dally, it will get too hot and you end up under filling the fluid (since it expands when hot).
Intermediate
Joined: May 2014
Posts: 39
Likes: 16
I would suggesting draining/filling the diff while you're there.
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I too would recommend draining the fluid and changing the filter while you are in there. with 100+K miles on the car, the fluid is probably pretty dirty.
