Glad to hear that your shifting problems are gone. I ordered the sonnax spring yesterday, hopefully my outcome will be the same.

The TSB I recall reading about filling the ATF to the very top line was a recommendation for people who complained about rough shifting. As long as your within the fill zone for the recommended temperature, I wouldn't be concerned about keeping the ATF fluid at the top mark.

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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles