What is the best MTL for the 6-speed? I am considering going to GM Sychromesh Friction Modified MTF as it did a fantastic job smoothing the shifts in an older higher-mileage EF Civic I had years ago, but I am always looking for suggestions. I have also heard that a heavier weight fluid works well, such as the MT-90 stuff from Redline. I ran the MT-90 in an EP3 Civic I had in 2005, and I never had a shifting issue with that one either, but it was a low mile car as well.

 

I went with GM SFM fluid. Great stuff and available anywhere. Highly recommended.

 

I used in my mini s53 2006 t4 from toyota never have problems for 2 years