5 cylinder Diesel in F150's Future?

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#46

08-11-2013, 11:00 AM

Tom

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Quote:

Originally Posted by tvsjr

At the end of the day, I still maintain that you won't see enough fuel economy improvements out of a baby diesel to make it worth the additional up-front purchase price, nor the maintenance over time.

Now there is something that we agree on.

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#47

08-12-2013, 06:08 AM

johndeerefarmer

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Quote:

Originally Posted by Crazy001

betterhink your memory is a little funny. Go to the OBS forums and look at the fuel economy of the old 6.9 IDI, 7.3 IDI, and first-gen Powerstroke. Then go to the 6.7L forum and look at the fuel economy coming from the latest technology. You'll find that the 6.7L is the most efficient engine put in a Super Duty to date. It's not uncommon to see 21-22 MPGs in a crew cab 4x4 truck. Can you find a crew cab 4x4 with an older engine that comes close?

Can you find me an example of someone who went from 17 to 10 MPGs towing the same trailer with a newer truck?

Everyone that I know that personally owns a 7.3 Powerstroke or a 5.9 Dodge get nearly twice the mileage towing of any newer diesel. They also got about the same unloaded as loaded. The new generations may get over 20 mpg unloaded but loaded fuel economy drops like a rock

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#48

08-12-2013, 06:22 AM

Tom

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Quote:

Originally Posted by johndeerefarmer

It doesn't work like that. In fact, it's never worked like that. Pulling a trailer require more power from the engine, which burns more fuel. But don't just take my word for it...

Quote:

Originally Posted by machmedic

2003 F-350 7.3L 4x4 Auto CC LB empty- 15 city/ 18-20 Hwy and towing is 10-12 mpg. Hope this helps.

Quote:

Originally Posted by lowbed dud

02 f250 cc 4x4 , 16-18 emty, 10-12 towing 27 ft toy hauler

Quote:

Originally Posted by Calli

Can squeeze 17 empty. Hauling 4000 lb camper, I get 11-12

Quote:

Originally Posted by ff1210

2002, f250, 2wd,4door,6speed,3.73gear on 265/75/16.....14.5/16.5 city 17/19.5 highway empty.14.0 pulling landscapes trl around 5000lbs mix driving

Source thread HERE. These are all 7.3L owners from the forum here. I've driven lots of diesel trucks, and I've never heard of one that doesn't lose fuel economy when towing. That's because it's not possible.

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#49

08-12-2013, 09:28 AM

PrinceValium

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Quote:

Originally Posted by BII Plow Truck

I'll take a 34 MPG Volkswagen Amarok please.

Million mile engines, and no rust through in 6 years like on a Ford. Wake up Ford!

***Stepping off my podium***

I was looking at them after you said that...and noticed the automatic has a bit more torque than the manual.

They are using water cooled turbos with an intercooler (where Ford is using water and oil cooled with an intercooler). Of course the Volkswagen gets that great milage...it is a tiny motor in a tiny car!

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#50

08-14-2013, 03:42 PM

parkland

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Quote:

Originally Posted by Crazy001

I've never heard of one that doesn't lose fuel economy when towing. That's because it's not possible.

I have an old style camper, it's only about as high as the truck, and I bet it couldn't burn more than 1-2 MPG, cause it only costs 10-15$ more to fill at my usual stops over empty.
That is rare though, most campers now are huge, push wind, and put you in the 8-10 MPG neighborhood.

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#51

08-14-2013, 03:45 PM

parkland

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Quote:

Originally Posted by johndeerefarmer

5.9 Dodge get nearly twice the mileage towing of any newer diesel.

I I had a nickel for every time I heard a dodge 5.9 cummins owner talk about getting 27 MPG, I'd be rich.
I tried it, 12 valve 5.9 cummins, 21 MPG hand calculated, straight highway other than pulling out of and into fuel station. not so great considering that was only an extended cab, and a little lighter than modern trucks.

Certainly not 27 MPG.
And that was at 65. or 105 km/h or so.

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