I picked up some transmission fluid, Motor Craft Mercon V, its in a red bottle. I had some old bottles from before and there black. Not only is the bottle different but the weight of the fluid seems lighter/thinner in new bottle. Did i pick up the wrong stuff or will it be fine?

 

Are you sure the old stuff isn't Mercon?

 

Both containers say Mercon V

 

Different suppliers? If they are both labeled Mercon V, then I do not see any problem mixing them. I have seen color differences between brands, but most all ATF is real thin and never noticed any real viscosity difference.

 

both Mercon v by motorcraft lol