Hybridhunter wrote:
Again, that was not what you originally said or posted......you keep "double speaking"......The EB recommends premium for heavy duty usage, it is not the same advisement or context as the 6.2 in the F250, which does not refer to usage, but to best performance, which all the recent owners manuals for the more recent generation of Ford powertrains suggest.
And to state the obvious, a 7000# truck does not perform as well as a 5000# truck with similar power......I never suggested it did either.
The EB manual says for best performance. I don't find where it says premium is required? Here is an excerpt: "Premium fuel will provide improved performance and is recommended for severe duty usage such as trailer tow."
And here is an excerpt from the 2017 F250 manual: "For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather as well as other conditions, for example when towing a trailer."
They look like they are both saying the same thing to me.
My F150 is almost 6000lbs. So yes, there is at least a 1000lb difference, maybe a little more? But I have contemplated that, too. I've towed with much more weight on the F150 than I did on my recent trip towing with the F250, including 4 more people and all of their carp...which I promise weighed more than 1000 lbs. This last trip was just me and one of our dogs.