I recently converted my 2007 Civic LX to Amsoil ATF. I have completed two of three drain and fills, which places my transmission at 65% Amsoil and 35% Z1. So far the shifts are ever so slightly more crisp. There is less hesitation getting into gear on the low end. My question is whether or not I should disconnect the negative battery cable overnight after each drain and fill? Is this always a best practice, or will my transmission "learn" on its own using the "Fuzzy Logic" process from the computer?
After changing to another ATF, disconnect battery?
- Thread starter mfisher1967
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It's not a bad thing to do, but if you are not having problems, I would not worry about it. I recently did a full flush to Amsoil ATF in a 60K Taurus without disconnecting the battery and it shifted just fine (as in better).
It will relearn as you drive, anyway.
if the battery is disconnected, how long of a period should it stay that way to get results and for the ecu to reset?
5-10 minutes should be enough.
Step on the brake pedal a few times to discharge any residual charge, to be safe [This is not nonsense - it's in a few factory manuals].
Step on the brake pedal a few times to discharge any residual charge, to be safe [This is not nonsense - it's in a few factory manuals].
Neither have I.
Every time I replaced the ATF with the right new ATF, the car ran fine.
I have worked in repair shops that replace ATF, and nobody there pulls off the battery terminal to make the transmission relearn.
Every time I replaced the ATF with the right new ATF, the car ran fine.
I have worked in repair shops that replace ATF, and nobody there pulls off the battery terminal to make the transmission relearn.
..... AND that is the reason why so many people have problems with ATF flushes.
If your transmission has ANY electronic controls, it is always smart to disconnect the battery after every service.
Whether your fluid chosen or driving style needs to or not is irrelevant. Its just too easy not to!
If your transmission has ANY electronic controls, it is always smart to disconnect the battery after every service.
Whether your fluid chosen or driving style needs to or not is irrelevant. Its just too easy not to!
how do you know whether your a/t has fuzzy logic? would it state it in the owner's manual?
No need to disconnect battery, just get on the highway and drive the car. But everybody is different.
I appreciate this kind of advice from undummy. I think it may have helped with some random very hard 2-3 shifts in my 2000 Tundra. I also think that Schaeffer's #204 SAT was a good choice for this ATF application. Thanks undummy.
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