So after sitting for a year I changed the oil and drained the coolant(**have another car and got busy**). However, I decided to go back to dex/merc 3 as I think the merc v that was in there did not agree with my transmission. No leaks and shifting fine. However, I did it kind of a hurry since I needed the truck for summer yard clean up. I'm hoping that what merv v that was left and dexmerc 3 that's in there now don't create a "worlds colliding" situation. What do you guys think?