We use LAT in the heads up car, also have tried the ATI synthetic funny it is also called Type F, Super F to be exact and John Deere Low Vis Hygard as well. Anyway have not really noticed a big difference with any other than there is a stall difference with the Hygard. In the end the we have tried a lot and not noticed any difference in performance. I settle on the low cost type F stuff for the .90 car and IMO next to a turbo car they seem to be the hardest on transmission fluid.