Sorry for the late reply. If theirs no sludge/pudding on your dip stick at the top or rust on the stick it's more than likely just on the top of the valve cover & fill cap.You could pull that & feel better by cleaning it off.If anybody wants to add Trans fluid I wouldn't add more than 6oz,run the car like ya stolid it & drop the oil & filter when its hot. As mentioned Mobil 1 is a excellent syn,I use it it in my 93 Vette with the 2nd Gen LT1 since it doesnt have a oil cooler like the L98 & normal operating Temp is around 230 deg. As far as Dino/Reg oil any name brand is sufficient.
Previously known as,TONY-TAT2 /GODZILLA
09 Base bought new. 08 Pontiac G6 the Wifes bought new. 96 F150 4x4. 93 Vette 40th Ruby Red Anniversary Rag top 6spd.