I just changed the tranny filter and fluid on my '14 Grand Caravan 62TE transmission. I bought an aftermarket pan with plug, gasket and the Dorman dip stick. I used a non contact infrared thermometer and the graph scale. I also measured it cold and after changing everything including 5 quarts of Red Line C+ I started, ran through the gears and shut off, rechecked the fluid and looked for leaks. Then took an around town and freeway run and put it back on the lift, no leaks and 125F and a little low, added about .75 quart and was at 40-45mm which is the center of the operating range at that temperature. The hardest part was getting the seal out where the filter neck fits, had to use a drift and cave it in to remove it, new one I used a seal driver. The C+ is a pretty light pink and the OE is a dark purple color. They both stink like hydrocarbons and sulfurous.
I am not sure what tranny is in an '08