Half Shaft Leak in Transmission for Ford
Some 2012-2014 Edge/Explorer vehicles built on or before October 14, 2013, and equipped with a 6F35 automatic transmission may exhibit a fluid leak from the left-hand transmission half shaft seal due to wear on the transmission case bushing.
Remove the left-hand half shaft.
Inspect the half shaft journal surface finish. If the journal does not have any metal transfer from the bushing, the half shaft can be reused. Use the service kit that contains only the bushing and seal. If the journal has any metal transfer from the bushing, replace the half shaft.
The replacement bushing with the red Teflon coating on the inside diameter of the bushing allows for the reuse of the original half shaft if the half shaft journal does not show any metal transfer from the original bushing.