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Old 07-30-2012, 05:09 AM   #15
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A couple of primary differences between the ecoboost V6 as applied to the F-150 and the Flex may be in the following 2 areas that relate to trailer towing:

1. Cooling system - the cooling capabilities of an engine, transmission and final drive package are sized for, among other things, the total weight of a vehicle and whatever it will be towing, including drag induced by the frontal area of the towed load. This is reflected in the vehicle's GCWR (gross combination weight rating). I suspect that the F-150 ecoboost with towing option has substantially more engine and transmission cooling than is packed into the limited space and frontal area of the Flex.

2. Transmissions and final drives - I would think the transmissions and final drives of the ecoboost F-150 are substantially stronger than those used in the Flex which, I believe, is based on a modified version of the Taurus chassis, basically a FWD vehicle with add-on AWD capabilities.

Just something to keep in mind.....

Rusty
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Old 07-30-2012, 07:01 AM   #16
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Quote:
Originally Posted by RustyJC
A couple of primary differences between the ecoboost V6 as applied to the F-150 and the Flex may be in the following 2 areas that relate to trailer towing:

1. Cooling system - the cooling capabilities of an engine, transmission and final drive package are sized for, among other things, the total weight of a vehicle and whatever it will be towing, including drag induced by the frontal area of the towed load. This is reflected in the vehicle's GCWR (gross combination weight rating). I suspect that the F-150 ecoboost with towing option has substantially more engine and transmission cooling than is packed into the limited space and frontal area of the Flex.

2. Transmissions and final drives - I would think the transmissions and final drives of the ecoboost F-150 are substantially stronger than those used in the Flex which, I believe, is based on a modified version of the Taurus chassis, basically a FWD vehicle with add-on AWD capabilities.

Just something to keep in mind.....

Rusty
Rusty is right, also to note, the Flex is. Unibody,just as the new Taurus, and new generation Explorer. I spoke with several ecoboost F150 owners this past weekend at PomoRv and campground, ft Bragg, ca. They really like the package, most are towing 24 to 27 ft TT, no issues, most weights are below 7k.
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Old 07-30-2012, 11:27 AM   #17
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Quote:
Originally Posted by 10Boomer

Rusty is right, also to note, the Flex is. Unibody,just as the new Taurus, and new generation Explorer. I spoke with several ecoboost F150 owners this past weekend at PomoRv and campground, ft Bragg, ca. They really like the package, most are towing 24 to 27 ft TT, no issues, most weights are below 7k.
I ATV with a guy that tows 8k with his 150. He said it takes a MPG hit when towing the weight but in his case it more than makes up for it when he is not as he does not tow often.
As for towing on the Flex I would make a deduction, being as the engine with 90 HP and 100 ft/lb of torque are both rated for the same load, that is is more of a structural then drive train related ( then being next).
The F150 also has a curb weight of 1k more than the Flex, probably frame and drive train (?).
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Old 07-30-2012, 11:30 AM   #18
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The fellow we sold our 89 Avion (35' long) to is towing it with a new Ecoboost F150. He is happy with the way it tows and repsorts 13 mpg at 60 to 65 MPH in the flat part of Texas.

Ken
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