My Brother just purchased a 2017 F-150 4x4 3.5 ecoboost with the 10 speed Transmission. I know it's only been out a short time but does anyone have any insight on the best transmission fluid for this unit. (Just OEM?) Im not a ford guy but any recommendations for his Transfer case & Differentials as well ? I know GM full size trucks/suv's have a trans fluid temp gauge, what about ford ? He will be towing an 8500lb trailer & would like some added protection. Thanks