What do you do to check your tranny fluid level? Idle till thermostat opens and check or what? I checked mine the other day after drivng about 20 minutes or so when it was nice and warm outside, and it showed to be quite a bit over the crosshatched marks. Last time I added fluid was when I installed my cooler about this time last year. When I did the cooler I just cranked the car let it idle a few minutes and checked the dipstick, I added a bit to bring it into the cross hatched area and haven't checked it since. So if is is majorly overfilled it has been that way for a year. The tranny shifts fine no problems, just wondering what method you guys to check the level and if it is overfull what it could damage/symptoms?