NV 3550 leaking

mattyice2

TJ Enthusiast
Joined
Jan 22, 2018
Messages
238
Location
York County, PA, United States
Just finished changing the oil on my NV 3550. I put two quarts of redline MTL in my transmission. Trouble is only 1 quart came out. There must be a leak somewhere. It never leaks when parked, so it must be from driving. Any ideas?
 
Output shaft seal, possibly? When I had my case off recently I noticed mine had a small seep back there, and it wasn't the original Mopar seal either.
 
IMG_20220607_210434973 (1).jpg
 
Output shaft seal, possibly? When I had my case off recently I noticed mine had a small seep back there, and it wasn't the original Mopar seal either.

I think it's the seal in the front. I had an oil leak a couple years back, and I really thought it was the rear main seal. I was fooled the transmission is the real culprit. I'm wondering if I should go through with the hassle of replacing the seal or just shorten up my change intervals?