Mine has the stumbles both hot and cold, yes. So the amsoil smooths it out some but it’s still there. It still seems to be improving, slowly, so for now I’m going to leave it as is. Frankly I’m not yet sold on it. The overall shift grabs quicker but completes just a hair slower, if I’m being totally @nal retentive, which makes sense as a slightly thicker fluid. Overall the effect is that it doesnt slap into gear at the end of the shift, which is a nice improvement. If I could do it again, I would have swapped 2 quarts, maybe 3, for the additive package and slight boost in viscosity and tried that ratio. I might actually swap 1-2 quarts of Mercon ULV back in just to back the viscosity down a touch. But, first, I’m going to just drive it.
there is a pdf on the web where one really enterprising dealer worked on one of these 3 times and eventually swapped out the valve body, fixing it. I can’t see mine doing that for free under what‘s left of the warranty, and don’t really want them to. So it makes me wonder if there’s a flaw in how the valve body wears in. Being that mine does seem to be improving a touch, slowly, I’ll give it some time.
that, and idk if it was the transmission or the rear axle, but doing both has resulted in a quieter ride and holding a higher gear better going up hills. the axle definitely needed it, based on jet black fluid.
as far as a full change to amsoil, as much as I’m a fan of their fluids, this one is too thick for a full dose of it. I assumed before putting it in that it truly was an accurate replacement, but after seeing the viscosity difference have been a little disappointed in them, for the first time. I would not recommend a full change to it, at least not yet. Maybe they’ll come out with a ULV version.
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