Good point but I got it with 17k miles for 56k so it isn’t a 70k truck for me. That said it’s more of do I want to versus can I afford it.
So curious is the premium a requirement or recommendation to get the full amount of quoted gains?
I’ve heard it improves gas mileage although I am sure it’s a wash after paying for premium fuel. It would be nice to see >20 avg MPG though, 1000 miles in and I have averaged 17ish.
I no doubt will do it. It’s just a matter of when.
It’s a turbocharged truck—it’s designed to perform best on premium fuel. While it will run on regular, both performance and long-term durability are tied to octane. Under boost, higher cylinder pressures increase the risk of knock, and premium fuel helps prevent that so the engine can maintain proper timing and power.
Yes, the computer will adjust if you run lower octane, but that comes at the cost of reduced horsepower and efficiency. The engine pulls timing to protect itself, which means you’re not getting the full benefit of the setup.
If you’re running a “Ford Performance” tune, the expectation is added power—and that power is built around premium fuel. That’s part of the trade-off.
I’ve had the tune for about a year. I do mostly freeway driving and haven’t seen any real change in MPG—I’m still around 18. My driving habits haven’t changed, so there’s been no noticeable gain or loss there. If anything, running lower-octane fuel would likely decrease MPG since the engine can’t operate as efficiently.
That’s really the whole idea behind “EcoBoost”—you can stay in the “eco” side with lighter driving and lower octane, or step into the “boost” side for power, which comes with the need for premium fuel.