Ford backhoe 420. Not sure what type of oil to put in the auto transmission, also not sure where to add the oil and not sure when transmission is full because i can't find a dipstick. there is an oil filler plug by the look of things half way up the transmission, is this where i add the oil untill it comes out to get the level?

James Garcia, April 2009

dipstick has nut head on top of tranny, oil is hydrolic oil

chuck, October 2009