I Have A C4 Or C5 With A Pan Fill Dipstick Tube, But I May Have A Case Fill Dipstick, It May Be A Inch Short Therefor I Put A Quart Too Much Transmision Fluid In.when I Change Fluid And Filter I Put 6 Quarts In Car Runs Great But Will Not Show Up On The Dipstick. Can Anyone Tell Me How Long A Pan Fill Dipstick Is , It Is In A 1966 Mustang But I Think The Transmision Has Been Change. Thanks For Any Help