I'm the original owner of my RR. Since it was vertually new I've run nothing but Dextron ATF. Never broke it and never had to change parts because of wear. Say what you will about ATF. Everyone has an opinion. Mine is there is nothing to be affraid of with ATF. I race my car, but most of the time it is street driven. No issues at all doing either. When racing, it shifts like butter through a hot knife. On the street, the same, hot or cold. Take it from 43 years of first hand experience. ATF does work in A833's. ATF4 is another story. I don't have any experience with it. But being nothing more than an ATF synthetic, it should work also, but with an additional cost.