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Old 11-07-2012, 09:12 AM   #14
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Member#: 139444
Join Date: Feb 2007
Location: PA
2008 Impreza
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Originally Posted by daveyboy View Post
Like the ecoboost isn't a car engine? It was released in the Taurus/Lincolns before the F150--yeah, yeah, it was "changed" for truck duty. Yeah right.

But if it revs to 17,000 rpms, you are right, it is the most amazing engine evar!

All of the towing test I have seen show that it uses MORE fuel than comparable NA engine cause it is constantly in boost--and generating a lot of heat... .
The Taurus version of the 3.5l ecoboost has a different size turbo charger, completely different head, cams, different exhaust manifold and tuning. It generates full torque at 3500rpm. So your comparison is not apples/apples saying it's the same engine in the F150. So yes, the F150 ecoboost is a truck engine because the engineers designed it to produce torque as low as possible. Only the main block is the same as the taurus.

17000rpm is a typo, it's pretty obvious to anyone with car knowledge that i meant a low 1700rpm.

As far as towing goes with the F150 ecoboost vs the 6.2l or 5.0, towing MPG is a wash for most F150 buyers. For someone that tows an RV once a month, it doesn't make a difference. You get crappy fuel mileage with all 3 engines, so the difference between 10mpg vs 12mpg is moot if you only do it a few times a year. Even diesels gets crappy fuel mileage towing 10000lbs. The consumer reports didn't test any towing either, which they should have. Because each customer is different, mileage during towing would make a difference to the ones that tow heavy loads everyday. But most people that tow heavy loads daily for their business, or full time rv people, almost always get a diesel.

FYI i normally tow with a diesel, but i have friends with rv's that tow with an ecoboost and a hemi 5.7l(also a car engine put into a truck). The ecoboost is absolutely phenomenal as a tow vehicle, tows like a diesel and doesn't feel like much is behind you. it has plenty of torque at all engine speeds. The hemi likes to rev, it's annoying to me, but it gets the job done. There is some lag while waiting for the revs to climb, and plenty of down shifting. The hemi was also constantly falling behind at altitude in Yosemite even with a much lighter RV than the on the ecoboost.

Obviously i never said the 5.0 or 6.2l can't tow. They can, and are obviously rated to do so. But the turbo ecoboost does a better job in my experience and opinion. Towing mpg is a consideration to factor in when buying a vehicle, but also towability is another factor to consider. Plus when not towing, you get the mpg of the 5.0L the other 98% of the time you drive the vehicle.
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Last edited by gggplaya; 11-07-2012 at 09:26 AM.
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