Quote:
Originally Posted by Stephen12ZL1
volume is tricky as ATF expands in the system as the temperature increases. This expansion causes the problems which would never materialize on the street. I have also found leaving the car in "D" on track allowing 20 extra upshift/downshift events can really spike the transmission temps. I know what the performance supplement says about this but the unnecessary shifting which often occurs at VIR led me to start paddling the shifts manually. For a 25 minute session in the heat this realy adds up as every shifting event makes the fluid temp soar. I will concede the tranny does a great job in "D" if you have a time trial and need a one or two lap hero moment. At VIR for instance (just in turn 1) the tranny will downshift into 3rd unnecessarily then immediately upshift into 4th to 5th. As you approach turn 3, it continues the same unnecessary behavior and rolls through the same logic. I can do this myself with half as many events holding 4th gear...you get the idea. Get a rhythm and try it to see if it makes any difference at your track. Also double check to make sure the techs used the proper ULV fluid and not "whatever is available". Be certain they didn't use HP or Dexron 6. Hope this helps and good luck!
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Stephen: Thanks for your thoughtful reply. I also had wondered about paddle shifting myself, but with the supplement indicating we should leave it in "D," I figured I should follow their recommendation. What I liked about my former 2018 ZLE M6 (my current is a 2023 A10 ZLE) was that I could select the shift points, and this is appealing even with the A10. I also would rather not have the car stay in the 5500-6500 rev range as it does in "D," with all the extra shifts, for we have massive torque even at much lower revs. Less time at or near red line should help everything run a bit cooler. I'm at the dealership today to get things checked out, but maybe I'll try manual shifts at my next event. I imagine that I should be able to use 3-5 gears maximum at a track like Road Atlanta, so it's probably not too difficult to paddle shift. I have a couple of DCT cars that I shift manually (one has a 9 speed DCT--my 2017 NSX), but I still only need about 3 gears for manual shifting. Sorry for being long-winded. If you or anyone else has further suggestions, I'd appreciate them. I'm trying
not to have regret about switching from the M6 to the A10. :-)