Smoother shifting; both up and down, will allow the tranny longer life if not driven hard all the time.

Ugly sea green color No other noticed weaknesses

Although the stock fluids weren't that bad, it gave the shifter a notchy feel. I actually used the lightweight shockproof fluid, since the Heavyweight was more focused on tranny grip, not tranny life. My stock tranny has no problems with it, I just wanted a better feel and tranny life. This is a GL-5 oil (the MT-90 fluid is a GL-4). Well, after I put this in, almost instantly, I can feel my shifting feeling smoother. A lot smoother, like a new tranny. It's designed for hard use (occasional street racing/spirited driving). I feel a lot more secure with this stuff in my tranny. And for the record, I have the 75w90ns for my rear differential. I respect all of Redline's products.

Similar Products Used:

Redline MT-90 *barf* Stock (no clue what brand they use)