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I'm going to try it again, (in the interest of science ) autocrossing next weekend in Quincey, IL. this time with two drivers in the car so it will get twice the abuse and much less cool down time between runs.
I'll post those results after that event.
OK, results: Same type autocrossing with 2 drivers in the car (twice the runs, little or no cool down time, HOT summertime weather, aggressive driving style)
NOW: max. temp. at 215, quick cool to 200-205
BEFORE COOLER: max. temp. 240, quick cool to 220
So......looks to be about a 15-25 deg. F temp drop in trans fluid across the board. I'll call it succesfull!
I'm still considering synthetic automatic transmission fluid, any thoughts on that????