What's a second gab? some say don't flush a tranny after its accrued a lot of miles without any flushes, but I have done this with good results. You might want to look at your flex discs too.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual