I'm using Castrol IMV in 3 Asian auto trannys with good success(I may be a bit picky).
'01 Lexus RX, '04 Nissan Altima & '06 Mazda3
-------------------------------------------------------------------------------------------------------------------
Our friends(husband, wife & both adult kids) are using IMV in their 2 Honda's('07 Pilot/'01 CR-V and 2 Toyota's('04 Camry/'07 Scion tC).
We all(both families) claim that the shifting is different. I just want to be "CLEAR" that the shifting is "NOT BAD", just different than the OE, or what we were all use to prior to changing the ATF...But, you get use to it!
Again, Not Bad Shifting!
None of us are complaining really, as there are no faults nor hard/harsh shifting with the Castrol IMV
For example: The things that one or more of us feel in our trannys is...One tranny, we can feel the shifts a tiny bit more, and the others; the shift points seem different(a little longer in one and a bit quicker in the other). But, only the vehicle owners would notice the differences. Every shift feel is "seat of the pants" ONLY! And very minute but noticable!
I guess one would really have to pay close attention to the before/after of the shifts. Otherwise...Who's the wiser!
Our friends claim that they all feel the shifts more but, none of the trannys shift harsh. ATMOF, they're all quite smooth in both families of vehicles. Each of the 7 vehicles(2 families) trannys all having their own shift charactor and particular feel
Multi-Vehicle Tranny Fluids will all be a bit different in their shift charactor. One would have to experiment with different ATF's and choose what shift feel you liked best in an ATF, and stay with that one brand.
If I had to pick the tranny(s) that shifted best to my liking of all 7 vehicles(I've driven them all), I'd pick the Camry and Mazda3 regardless of ATF Brand