Quote:
Originally Posted by roddy
I haven't tried a full fill with MTL...only a couple of blends. The 1st one was MTL/Honda MTF (the thinner one). That was just an experiment to see how the transmission would act with a thinner than stock fluid. I used that blend because that's what I had on the shelf at the time. This worked much better for the 1-2 shift, but once warmed up, there was a slight catch on the 2-3 shift.
The 2nd one was 1L MTL and 1.3L MT90 (I believe I said 1.3L MTL/1L MT90 in another post, but I checked my records, and that was incorrect). This one worked pretty good...almost as good as Pentosin except for the 1-2 shift when cold (still far better than the stock fill). I drive my car year 'round in Canada, and the outside temp had to be well below freezing before the 1-2 shift got miserable.
Redline has recently changed the viscosity rating on the MTL. I'm not sure if there is any actual difference in the fluid, but the stuff I bought last summer was 70W80. More recent bottles (and now the website) list it as 75W80 (same as Pentosin).
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I replaced the fluid in January which let me directly compare stock to MTL in the cold. We had a couple of -30C days right after and the MTL was definitely lighter feeling and shifted easier, but I don't know if I'd say it was "better" feeling or not - the notchiness was still there. The 1-2 shift did not improve drastically either, even up to about 0C I was often "locked out" of that shift. Part of my issue is that for a lot of my driving, the engine, let alone the transmission, doesn't warm up completely when the ambient is below ~-5C. Simply because my drive to work is less than 15min. Longer drives did see the transmission working much better.
Now that it's summer, I'm almost thinking that I prefer the feel of stock, but it's hard to tell. I don't doubt that the MTL is a better oil, especially for winter, but I'm curious about Pentosin and will likely make the effort to try it out next time.