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  • How to achieve 90% new transmission fluid ?

    My vehicle holds a total of 11.2 quarts of automatic transmission fluid.

    Removing the transmission pan and changing the filter, results in removing 5 quarts of old fluid, and adding 5 quarts of new fluid. Which was done.

    So now there's about 45% new fluid in the trans

    Without changing the filter, 3.5 quarts of fluid are exchanged.

    So my question; with taking the pan off and replacing 3.5 quarts at a time, how many times does this take to achieve 90% new fluid in the transmission ?

    The vehicle will be driven a bit between each fluid change, to mix-up the new & old fluid.

    2 AnswersMathematics5 months ago