I had crawled under my truck and to my surprise noticed that the whole under body of my truck is covered in ATF from the bell housing back. From the looks I would have thought that I ran it low on fluid and was very relieved when I found out it was only a little low. It's losing about a 1/2 quart a week and thats at least 500 miles. The trans was replaced about 25k and the one who did it is over 200 miles away. I would like to at least try to find out where its coming from before I decide what to do. I tried leaving the truck run in N and then see if it was coming from a return line or around the pan. Everything is covered and after 20 minutes I still can't find any evidence of where its coming out of. The trans is not acting up and if I wouldn't have crawled under it I would have never noticed it. Any ideas?

 

hi
o ring on fill tube
breather inside bell housing -caused by over filling or over heating
loose pan bolts
loose trany line fitting
shift lever seal
throttle preasure lever seal
hole rubbed in lines from them rubbing together

wash it down and drive a short dist and recheck !

 

I doubtthis will help but my truck but I found a Trans Oil Leak on my '04 and it was leaking at the quick connections where the lines go in the cooler and the dealership wound up replacing the cooler and transmission lines.