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Right. So problem solved by topping off the tank to the point where a dribble results in a handle click, you flood your evap canister with gas, and throw an engine light. But you'll know the tank is full !
Haha, that one actually got a chuckle. Well played.
I do not know how much mileage changes in the “break in” period but I am more than happy with my 20 mpg compared to my previous ‘13 5.0 super crew. That truck was getting 15.5!
I take issue with the term ‘lie-o-meter’. The truck is incredibly intelligent and does an admirable job reporting economy. Keep in mind that hand calculations are very rough estimates in themselves. The fuel cutoff trigger on gas pumps can easily vary by a half gallon or more.
Mine lie-o-meter was consistently over 1.5-2 MPG vs hand calc. Now it is consistently within .5 MPG.
What octane? 87 gets much worse MPG in my 2.7 than 91/93. 18 MPG vs 22 MPG long average. I also get best MPG in Sport and keeping the RPM around 2000 by top get selection.
This is crossing WI on 93 octane,
This is average for near 6000 miles NE/CO/NM/AZ/UT/ID/WY/SD/MN most on 91,
Speedometer and odometer have been corrected and just barely pessimistic. Running 87 the truck cruised with 2+ psi boost at 80 MPH on 91 same speed it was in vacuum more so with 93. KM
Last edited by 2017bluetruck; Apr 26, 2023 at 05:17 PM.
I have a 2016 2.7. I found that if I keep it 65 or below, I will get 24 to 25 mpg. If I run it above that (70 to 75) it will drop down to 20 to 21 mpg. Yes, keep it out of the boost as much as you can.
That brings up another question, why doesn't my truck have a boost gauge? Using one much like a vacuum gauge on a normally asperated engine can help you drive for fuel economy.
That brings up another question, why doesn't my truck have a boost gauge? Using one much like a vacuum gauge on a normally asperated engine can help you drive for fuel economy.
I think it depends on the trim level. Mine is an XL and doesn't have it.
You may have a +-PSI display, depends on trim level. I use a SCT BDX to display that info.
And yes I date back to a time vacuum gauges were standard in may vehicles and often used to indicate efficient operation.KM
Same as I experienced with my 2013 3.5 truck, my '22 does its best fuel economy on back road driving. Anything above 65 is when it starts ticking down. I have put just about 1200 miles on my now 7200 mile 2.7 truck, only using 87 octane. My normal commute is just about half back roads (30-50mph) and half highway, where I tend to cruise between 70-75. With my normal driving habits, I usually see 22mpg. I fueled up yesterday and have driven 85% backroads in the 70 miles I have put on it. This time for the highway driving, I set the cruise at 65mph. As i pulled into work this morning, I saw 25.9mpg average over those 70 miles, which is the best ive seen so far. Its possible to get good fuel economy, but it depends on many factors; back roads vs highways, speeds traveled, your driving habits (how heavy your foot is), elevation changes, etc.
