Is this normal?
01-27-2015, 01:11 PM
#11
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That's just asking for a million posts of men behaving like 80 year old bickering women^ As said above, not to insult your intelligence, but make sure the tires have the correct pressure. Maybe swap brand of fuel. Winter blend also sucks! I've always used seafoam, I'd make sure it's safe for the ecoboost or if there's something similar. I've seen posts saying that Seafoam is bad for turbos and boost hurts mileage. I call bs on both, everything I've owned until now has had atleast one turbo if not two.
01-27-2015, 01:17 PM
#12
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Winter gas has a big impact. My mileage on my 14 will go up when the summer gas arrives. Depending on the region you could take a 1.5-3 mpg hit. Right now my 4x4 Screw EB with 3.73 gears (4,000 miles) is getting 17.5 mpg (according to truck). My hand calculation shows that the computer is only off about .2 to .5 mpg, so I use it as it is close enough. I drive in the Smoky Mountains, so it isn't like the turbos never get work! I have noticed that 62-65 mph is about the breaking point for better mileage. Anything above that, especially with any headwind, takes it down pretty quickly.
01-27-2015, 01:21 PM
#13
Ive had an EB and 2 5.0's in the past 3-4 years, they are very comparable in consumption.
01-27-2015, 04:13 PM
#14
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Winter gas has a big impact. My mileage on my 14 will go up when the summer gas arrives. Depending on the region you could take a 1.5-3 mpg hit. Right now my 4x4 Screw EB with 3.73 gears (4,000 miles) is getting 17.5 mpg (according to truck). My hand calculation shows that the computer is only off about .2 to .5 mpg, so I use it as it is close enough. I drive in the Smoky Mountains, so it isn't like the turbos never get work! I have noticed that 62-65 mph is about the breaking point for better mileage. Anything above that, especially with any headwind, takes it down pretty quickly.
01-27-2015, 07:03 PM
#19
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The brand of gas didn't seem to matter in the 5.4..... I will check the tire pressure, just to be sure. Bottom line very similar truck, same altitude and location (WY) my old 5.4 seems to be better on mpg. FWIW, I really don't want to add anything to the gas since the turbos are so close to the exhaust, if the additive raises the exhaust temp, I would be scared of hurting the turbos. It only has 8600 miles, the injectors certainly don't need to be cleaned yet.