I just tried to check my transmission oil level again today. With the car in neutral, warmed up, I removed the dipstick, to wipe it clean and stuck it back in all the way and quickly removed it. The oil level was almost to the top of the stick. I tried again several times and got various high and low oil level readings, none of which where very definitive. Question: If the oil level is low how would know how much to put back in?