So I did not like Redline MTL in my gearbox. It did not improve shifting, same little notch in third and second, when cold. However, that notch took much longer to smooth out with Redline. Long story short, I had some Amsoil 75W90 GL5 gear oil, used it in place or Redline and I like it better. Same shifting as with the original factory oil, but now third and second smooth out a lot faster.

 

You want Redline NS (GL-5), not MTL.

 

Is that 75W140, or 75W90?

 

75w90

Available on amazon and elsewhere for ~$15 a bottle.