Manual (NSG370) third gear issues

Muddy Mutt

New Member
Joined
Jan 21, 2020
Messages
3
Location
Orlando
Good afternoon,
I’m having issues shifting to 3rd gear on my 2012 jku, have anyone experienced similar issues ? Should I replace my tranny? Please and thank you.
 
How many miles are on it?

What kind of gear oil are you using in it and when is the last time it was changed?
 
That I don’t know, cause I recently purchased this Jeep. What gear oil you recommend ? You think that will affect one gear only ? Thank you
 
The NGS370 is not known for it's reliability or clean shifts, that's for sure.

The bottom line is that you likely have a synchro going bad, and it's going to require rebuilding the transmission. However, you can buy yourself time by using Redline MT90 transmission fluid. That stuff is very well known for working magic on manual transmissions, and there's a very good chance it will get rid of the bad shifting altogether, or at least hold it off for a long time. I'm always amazed at how good that stuff works, really.

How many miles are on your Jeep?
 
Speaking with my experience, I agree with changing the trans fluid with a high end product before you take it to a shop.