I checked my transmission fluid last week because I was feeling some slipping occasionally and jerking when I gave it gas around the corner. Well, nothing showed up on the dipstick. I've added three quarts since then and it still doesn't show up on the dipstick. I cannot believe the transmission could be this low and still work as well as it does. I'm just afraid that for some reason I will overfill the tranny. Does anyone know how many quarts from nothing showing up on the dipstick until it shows full on the dipstick? Thanks

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