That is what I am currently using..... What I like about it: Relatively inexpensive full synthetic (I can change it often)...Ford approved....seems to run really smooth....Amzoil is not on the Ford list of approved oils.
Most PSD guys like the Rot-T6, Valvoline Premium Extreme is a close second.
I have a commercial account from my Amsoil dealer. I have been running it in all of my engines for a long time. I use their ( expensive) filters. Never had a problem. The commercial account is not as good of price as a dealer price but better than retail, I just message my guy and it shows up in a few days. The Amsoil has all the ratings Ford requires.That is what I am currently using..... What I like about it: Relatively inexpensive full synthetic (I can change it often)...Ford approved....seems to run really smooth....
To anyone running additive - I picked up a gallon of Opti-Lube XPD and plan to keep a couple small bottles in the truck in a sealing plastic container under the seat but have a question. Living in Texas, the interior of a truck not in the shade can hit 150+, and the back of the jug says it can ignite at high temps. Do I need to be concerned about that or leave space in the jugs for expansion in the heat? Anyone run into that?