Quote:
Originally Posted by ZLRob
Draining fluid, adding it, and correcting level is now incredibly easy thanks to all of the modifications that I made to the pan. After using AMSoil blue cap fuel efficient ATF (ULV equivalent) I found that the transmission is still more than capable of regulating it's temperatures properly sitting between 198*F while doing steady state driving like highway and a high of 208*F in stop and go traffic AND to boot, the transmission has NEVER shifted into gears easier and shifted between 3-4 upshift/ 4-3 downshift as easy and as seamlessly as it does now. to add to this, shifting is confirmed quicker via data logging going from .7 seconds under certain circumstances all the way down to .3 seconds.
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After servicing my transmission fluid myself last time, I transitioned from my OE ZL1 aluminum pan to the ZL1 1LE pan. I experience intermittent very hard up shifting from 3-4. No issues with downshifting. You're saying going to AMSoil resolved this harsh up shifting?
I was considering going back to my OE pan because I did not have these events prior to swapping my pans. I drained my fluid at 175F