mpg of new diesel F150 won't be so good?

[David85]

Originally Posted by mxhead

Anyone ever shut off the fuel to two of the cylinders on a diesel? chrysler is doing it on their gas engines.

Diesels are unthrottled, so they reach peak efficiency near minimum power output. Gassers however, are most efficient at full throttle.

The idea is to run the engine as close to full throttle all the time to minimize pumping losses, so that the cylinders that are still running do so more efficiently. The gain in efficiency is quite minimal in the real world, and overall the diesel is still the better engine IMHO.

[BrockwayMT]

I like the idea of the diesel half tons. I've always been a Ford guy but I think I may buy a 2010 1/2 Ram 1500 I get the best supplier discount on Chrysler vehicles. It's coming with a 5.0L DOHC Cummins V8. 270hp and 395 lb-ft. HP and torque curve looks very nice. I'd post them but that may get me in trouble. The only thing I don't like is the lack of a manual trans. Chrysler claims 19 city 25 highway.

[bookem15]

Originally Posted by BrockwayMT

I like the idea of the diesel half tons. I've always been a Ford guy but I think I may buy a 2010 1/2 Ram 1500 I get the best supplier discount on Chrysler vehicles. It's coming with a 5.0L DOHC Cummins V8. 270hp and 395 lb-ft. HP and torque curve looks very nice. I'd post them but that may get me in trouble. The only thing I don't like is the lack of a manual trans. Chrysler claims 19 city 25 highway.

SOLD if ford can not do at least these numbers I would be willing to go dodge to get those #'s. That is all that we need is at least 400-450 trq and it would be just right. 500 ft lbs of trq would be better but only if it does not hurt the mpgs too much.

[BrockwayMT]

The engine is easily capable of 450 lb-ft of torque. They have it severely torque managed to max at 392 to make the half ton axles and transfercase live.

[mnmwhit]

ahhh But the cool factor, the power, the MODs. I see 4" stainless duel exhaust, programmer, CAT delete, EGR delete......The engine will last 500,000 miles

Originally Posted by benningstspeed1.0

if ford charges a premum for the diesel(which they will) it will take you at least 10 years to pay for the difference in milage alone. factor in extra maintence and it just doesn't pan out. plus the fact that if half of the new f150 sales are diesel. the demaned of diesel will jump and so to will the price

[mnmwhit]

The real fact is Ford HAS TO put the diesel in the F-150 and the Expedition. if they don't they will lose. Chevy has active fuel management and a hybrid Tahoe and they both get repectable fuel mileage and still make good power. Dodge durago/Jeep Cherokee now offer the Mercedez Benz diesel. availible in the Dakota as well; 25 MPG!!!

FORD SIMPLY HAS TO OFFER A COMPETITIVE PRODUCT.

[DeckedoutF150]

Originally Posted by mnmwhit

The real fact is Ford HAS TO put the diesel in the F-150 and the Expedition. if they don't they will lose. Chevy has active fuel management and a hybrid Tahoe and they both get repectable fuel mileage and still make good power. Dodge durago/Jeep Cherokee now offer the Mercedez Benz diesel. availible in the Dakota as well; 25 MPG!!!

FORD SIMPLY HAS TO OFFER A COMPETITIVE PRODUCT.

i read an article in one forum that said for my also have the active fuel management. they are also talking about the hydrolic launch assist.

[CTford]

I think many people would take a small 4 cyl diesel in a F150 if it got 30+ MPG. If you need it for towing don't get that engine. It might be slow to get on the highway, but how often around town or crusing do you need 300hp unloaded? I'd take a 150hp 4cyl that gets 30-40+ mpg if I wasn't planning on loading the truck up that much. I have no issue flooring the pedel up grades if need be, but the fact is we made it through the 80's and into the 90's with slower less powerful trucks just fine.

We don't need a 400hp engine in a F150. Its nice, but not necessary. Let Toyota and Chevy battle the HP wars and guzzling gas; let Ford be the bigger company, step aside, and win the fuel economy challenge.

[David85]

Horsepower is sexy, MPG is not, what do you think is going to sell? The answer, is one of the big reasons why I dive an old truck.

The hydralic hybrid is "claimed" to be worth 60 MPG , and variable displacement does nothing for a diesel, comon sence of engine design is what has to happen when it comes to diesels. High gearing, high compression, and prechamber indirect injection was the better solution, and it wasknown for over 100 years by now, but I guess direct injection sounds better (what do I know).

If they ever try to take my old 6.9 diesel from me, they'll have to pry it fom my cold dead hands.....

[DeckedoutF150]

there are tlks that fors is coming out with some twin turbo engins called the twinforce, they are aupposed to be fuel efficient and have lots of power, we will see.

[Power Kid]

Originally Posted by CTford

I think many people would take a small 4 cyl diesel in a F150 if it got 30+ MPG. If you need it for towing don't get that engine. It might be slow to get on the highway, but how often around town or crusing do you need 300hp unloaded? I'd take a 150hp 4cyl that gets 30-40+ mpg if I wasn't planning on loading the truck up that much. I have no issue flooring the pedel up grades if need be, but the fact is we made it through the 80's and into the 90's with slower less powerful trucks just fine.

We don't need a 400hp engine in a F150. Its nice, but not necessary. Let Toyota and Chevy battle the HP wars and guzzling gas; let Ford be the bigger company, step aside, and win the fuel economy challenge.

Wow, you certainly don't speak for ANYONE I know, or have ever know. Right now Ford is losing both the HP and the MPG war. Will take another 2 years before we know if we'll be competitive in either...

[David85]

The thing with diesels, is that they don't have to be small to be fuel efficient, unlike gassers (again, because of the lack of a throttle) they run best at light load. My 6.9 has reached 22MPG on ocasion (I NEVER cruise below 70MPH).

But if we are talking a cummins 3.9L for example, it is no slouch. In fact, ford offers the cummins 3.9 in their fullsize superduties for argentina, puts out 215Hp stock, and soposedly is rated for 25MPG. And I think we all know that the stock output is only a "guidline", so if you still want to blow off some perfectly good tires, you still can.

[Aberdale Farm]

Originally Posted by CTford

I think many people would take a small 4 cyl diesel in a F150 if it got 30+ MPG. If you need it for towing don't get that engine. It might be slow to get on the highway, but how often around town or crusing do you need 300hp unloaded? I'd take a 150hp 4cyl that gets 30-40+ mpg if I wasn't planning on loading the truck up that much. I have no issue flooring the pedel up grades if need be, but the fact is we made it through the 80's and into the 90's with slower less powerful trucks just fine.

We don't need a 400hp engine in a F150. Its nice, but not necessary.

+1 for me. CTford, I agree with you, but my take is this site tends to be visited by performance types, so you won't get many here that will listen to you. I had a gutless Nissan diesel in the '80s that got 42mpg. It wasn't much of a truck, power-wise, but now that diesel fuel is ~$3.50/gal., I wish I had it back for the daily commute, run errands, and pick up a few sheets of plywood.

If someone from Ford Product Planning is monitoring this site, I will pass along this insight: I am getting better fuel economy in my 5.4L F150 than most others on this site; (around 18mpg avg.) I really love the truck, but even at 18mpg my F150 spends most of it's time in the garage because fuel is just too expensive to justify it as my daily driver. What does this mean to Ford? Unfortunately, it means the truck will probably last 20 years (at an average of 5000mi/yr. since it sits in the garage) and I will likely not buy another Ford pickup until then. (My 2006 F150 replaced a 1992 F150 that I bought new. It was my daily driver until gasoline hit $2.50/gal, then I bought a Volkswagen and the F150 was only used if I needed to haul something.)

The point is, build an F150 that gets 28-30mpg hwy, and it will become my daily driver again. A small diesel (why not offer the 3.8L you already have?) coupled to a 5/6 speed manual (w/overdrive) transmission, and you will likely already be there. If you can't do it in the F150, at least do it in the Ranger! I was considering a Ranger when I bought the F150, but since the Ranger was only rated a couple mpg better than the F150 it seemed pointless to sacrifice the hauling capacity and interior space for a measily 2mpg.

If you can't get the fuel economy up where it needs to be, then my daily driver will continue to be a Volkswagen or Honda, (yeah, I looked at the Focus and the Fusion, and I really like the Edge, but at 24mpg it stinks). At my current average of 35,000 mi/yr and 32-40mpg, they will get my business every 3 years for the daily driver. However much I would prefer to drive a Ford pickup for the utility and comfort it provides.

Get the mileage up significantly, and a Ford pickup becomes my daily driver again, and you get a sale every three years again.


Dale

[HamerDown]

Originally Posted by Aberdale Farm

Get the mileage up significantly, and a Ford pickup becomes my daily driver again, and you get a sale every three years again.

Dale

Problem is...Diesel Fuel will be about 5-6 bucks a gallon...and regular grade gas will always be much less. Even if the 1/2 ton trucks see the mpg numbers you're hoping for...the Fuel Co's will just hike the price up more. It's a lose-lose situation. I've owned a Diesel for the past 20 years...it's getting more and more ugly at every fill-up. not like the good old days when Diesel fuel was (much less) then regular grade gas.

[David85]

Believe it or not, biodiesel has come a long way over the years, and in some places its slightly cheaper than "dinodiesel", I wouldn't give up on diesels just yet.