We have a 2007 Winn Voyage 38J with 8.1 L Vortec on Workhorse chassis with 6-speed Allison i. I'm trying to check the Tx fluid and am encountering confusion. The owner's manual shows a photo of the ...
I would go with the actual dipstick. The danger with being overfull is if it is too full the fluid can contact the rotating gearsets and foam up. If after a long drive you are above the level, but there is no foam or bubbles on the stick then I would not worry about it.