"" The 6.7L block is CGI and the 2.7L block is also CGI. Compacted Graphite Iron. The next gen 3.5L will be CGI. Sounds like the same to me. ""

I am basing it on some well known engineering facts, materials aside: ""“The high compression ratio of diesel engines allows for better efficiency compared to gasoline engines,” Angner said, “but this high compression ratio also requires more robust parts, which in general are considered to add longevity to the life span of the engine, because diesel engines use compression ignition, which can quickly ruin a gas engine, they must be made very tough. And because they come form a workhorse heritage, they tend to be very reliable and need a minimum of care""

 

If I wanted an economy pickup I'd go buy another Courier or B2000. Tiny truck, with 1200-1600lb cargo capacity, and my 2.3 equipped one got nearly 30mpg real world, loaded. If it burned less oil it probably would have gotten better mileage.
It's nearly done as a 4x4 and diesel conversion now, and should still get 25 or so while being far cooler than the current F150s. Unfortunately it won't have a 7k tow rating, but that's what my 7.3 swapped 69 F250 is for.
Modern trucks are cars with beds, they are far too luxurious. Two F150s have come through the shop for bedliners in the last two weeks, one 2.7 EB and one 5.0. Both had insane levels of comfort stuff, and would have likely lost 500lbs ditching that all in favor of rubber floors, unheated cloth or vinyl seats, no backup cameras, basic stereo, and manual seats/windows/etc.

 

I want the luxury, buying Platinum version, I found i need a truck and have to drive it more than any other vehicle due to where we live and needs we have. The level of luxury and the towing ability are both critical for me as our boat is 34' long. We rarely tow it, but when I need to do so I need the towing , the rest of the time I want good fuel economy

 

Diesel no more chances for ecoboost. too many problems

 

I would not tow a 34' boat with something smaller than an F450, unless it was some sort of narrow lightweight configuration. In that case I might step down to an F350 dually.

 

We have a winner