Bob Ayers
North Carolina Chapter member
I flushed my tanny today, and changed the filter. I only use Mercon V, non of the multi-purpose (Dex & Mercon) ATFs. I have heard good things about the Valvoline full synthetic Mercon V, and it looks like all of Valvoline's Mercon V are full synthetic. You can see from these photos, that the Valvoline Mercon V (not labeled full synthetic) is the same part number as the Valvoline Mercon V which is (labeled "Full Synthetic). The last time I flushed my tranny, I used Castrol Mercon V, which is a synthetic blend, just like Motorcraft Mercon V:



