Join Date: Mar 2011
Location: Houston, TX
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I did a tranny flush twice on my 04 Impala at 80K miles while i was a lube tech at a Chevy dealership. Prior to that, I did a regular fluid and filter change with the updated Dexron VI fluid and new GM trans filter. Since I realized that this was only partial, I waited another 8K miles and do another trans fluid and filter (pioneer filter) change with the same Dexron VI fluid. At the same day, I also did a machine flush as well. My first time was a mess as I was inexperienced with using the flush machine. I disconnected the return hose from the flush machine while the car was running because the fluid level was high on the dip stick. Of course I saw a gyser action going after disconnecting the hose. I immediately shut off the motor to stop the jet of ATF coming out of the transmission. After that, i gave up and decide to just top off the fluid. I was playing a guessing game while filling the ATF. The car would delay while engaging into gear as I heard a noise as if it's starving for ATF. To keep it short, I just topped it off until the right level appears. The engine was at operating temperature, by the way. well and the car has 101K miles on it, still getting about 20 MPG in the city, maybe 34 on highway with a/c on.After that I got the fluid reflushed as my experience with using the flush machine got better. Now this time my ATF is good as it is, nice and red with a little bit of black showing on a white paper towel. I guess that "black" stuff is normal wear and tear, right? The car's transmission shifts very well and at 101K original miles and still gets about 21 MPG citywise with A/C running. I haven't driven it on the highway recently, so the mileage might be at 32-35.
1991 Toyota Corolla DX sedan, 146K miles, no power windows, locks, or seats, 1.6L 4AFE motor, A131 transmission. Daily driver car as of now.
Last edited by Tonyman89; 08-02-2011 at 11:00 PM.