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Old 08-29-2014, 11:54 PM   #1 (permalink)
Join Date: Oct 2013
Location: Central California
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Platinum Ghost - '14 Ford Fusion SE
90 day: 27.51 mpg (US)
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Fusion engine break in period

A month ago my 1999 F 150 Ole Red was sold and I bought my first car in over 40 years. The Platinum Ghost now has slightly over 1000 miles on the odometer and although it runs like a fine jeweled watch, the economy is still not up to the EPA average of 26 MPG. I realize that it will take a while for the rings to seat and maximum economy finally achieved.

The engine is the 2.0 liter Ecoboost turbo which seems to be well matched to the weight of the car. Even in the foothills of the Sierra Nevada, it performs very well. Does anyone have any experience with this engine and how long it will be before the break in is complete and better economy is reached?

I aired up the tires from 35 to 39 PSI and removed the spare tire. Airing up the tires did help a bit but more time is going to be required.


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Old 08-30-2014, 03:19 AM   #2 (permalink)
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though I do not have the same car as you, I also bought my very first new car with only 6 miles on the odometer. After about the 1000 miles, I did not notice a dramatic increase in fuel efficiency. Overtime efficiency just slowly crept up and up. However since I have been with ecommoder for a long time, I was already using advanced driving techniques, therefore I was able to exceed EPA rating by the 1000 mile mark, so really, I was cheating.

therefore, a big part of achieving good fuel gains is with proper driving technique. I suggest you study up on the 100 + hypermiling driving tips on the top of the forum page.

you will see this phrase a lot on this forum, "fix the nut behind the wheel."

See the rest of the Sti project log:
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Old 08-30-2014, 06:02 AM   #3 (permalink)
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It kind of depends on whether your fusion engine consumes gas or hydrogen

On a more serious note: some cars have 'heavy' oil for the break in period and get more economical when that gets changed to regular oil. Maybe yours is one of them.
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.

For confirmation go to people just like you.
For education go to people unlike yourself.
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Old 08-30-2014, 11:54 AM   #4 (permalink)
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I won't warrant a guess on engine break-in time, but your rolling resistance will improve as your tires wear in as well.
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Old 08-30-2014, 01:47 PM   #5 (permalink)
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Id do what ever the manual says. Usually its alone the line of dont keep the engine at a constant speed, dont exceed certain speeds in certain gears if its a stick or 70 mph over all in any gear, etc. Then some say leave the first oil in the engine til an indicator goes off.

The gen 2 insight for example takes a good 10 thousand miles before you exceed 60 mpg.

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