Which TORCO ATF for my t56 fluid change?? hivis or low vis?? or RTF ? im lost ... changed my fluid just b4 I put her away for winter & took her on a few drives since fluid change & she definetly don't like the Mobil 1 synthetic atf ... also wtf is the correct fluid fill?? 1 thing says approx 4.6 qts & the gm manual says fill to bottom of reverse switch hole? which took 5.5 qts? seriously WTF gives??? ive heard torco is an excellent choice for all the gtos fluids as I went with them for my oil 5/30 & just got 4 liters of the RGO a bottle of the type F for my Harrop install next week... but need know WHICH fluid for my t-56 trans ... plz help aint nothing General Motors about these cars what so ever......