The vk56vd were first used on m56(q70) and qx56(qx80) 2010 and onward with prem gas and 420hp 417+ torque. can take regular gas but runs poorly.

Now it is being use on current Armada, Titan and xd and called endurance engine and uses regular gas.

Any advantages using prem gas on the endruance engine?

I don't personally see it being an issue - the owner's manual says regular 87 octane is the recommended fuel.

Where I have noticed a difference is crappy gas. I stick with Shell, Costco, and Kroger fuel and my 2017 runs great on it with roughly 17mpg on my commute.

Your power ratings listed on the first two were tunes that required premium fuel. The current version of the VK56VD in the Titan is 390hp/394tq in the half ton gasser (I believe to also be the case for the Armada). I believe those numbers are up a tad with the XD.

They are detuned a bit in the Titan to accommodate the 87 octane fuel. No advantage unless you have the truck tuned with uprev or a timing advance.