Just the other day I did my oil change with T6 5w40, I bought the 2.5 gallon jug because the 2018 and up 5.0 requires 10 quarts. My OCI moving forward will be 7500 with motorcraft fl500. Its very simple, drain the oil, pour the old oil back in the 2.5 gallon jug, swap oil filters and my cost was 60 bucks all in with filter. My 2002 4.6 F150 used it for 250k, lots of towing / hauling and the timing chains were quite, the inside was extremely clean, almost no tan varnish on the valve train parts under the valve covers. I feel T6 is a very good truck oil. FWIW, anyone with the Gen3 5.0 should really consider the Ronin drain plug. I cant wait to do a UOA after this next run of 7500 miles.