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Old 06-18-2010, 09:32 PM
 
Location: Lafayette, Louisiana
14,100 posts, read 28,547,446 times
Reputation: 8075

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GM Rumored to be Interested in Light-Duty Diesel Again, Good Idea? - Wide Open Throttle - Motor Trend Magazine
GM may be putting a 4.5L Duramax diesel in it's Silverado truck. The claim is that it's power will be on par with the 2001 Duramax which was about 300 hp and little more than 500 torque. Possibly 25% more fuel efficient than the gas V8. Considering the coming increase in CAFE standards, this is probably the best route for pick-up trucks short of going back to trucks like the Chevy Luv.
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Old 06-18-2010, 09:39 PM
 
48,502 posts, read 96,909,608 times
Reputation: 18305
The feds don
t want more diesels on teh roadway 'so ;look for environamtnal;ist to resist this.
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Old 06-18-2010, 10:58 PM
 
Location: Scottsdale, AZ
4,472 posts, read 17,707,783 times
Reputation: 4095
I think quite a few guys would be interested in having a mini-diesel in an F-150/Silverado 1500/Ram 1500. Diesel engines have quite a few advantages over gas-powered engines such as towing, fuel economy, longevity, etc etc. I think it'd be a wise move to invest some resources in a small diesel for 1/2 ton trucks and I'd be willing to bet the first manufacturer to offer such an engine will profit heavily from it. Ford has thrown the idea around for a few years but has yet to bring anything to market, this is the first that I've heard of Chevy/GMC looking at one.
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Old 06-19-2010, 11:05 AM
 
8,317 posts, read 29,486,213 times
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Based on the current EPA ratings for the Silverado 1500 with the 5.3 gas and 6-speed automatic transmission, 25% better fuel economy with the diesel would be around 26 mpg highway. I don't think that will be good enough to attract a lot of buyers, given the price differential between gas and diesel fuel. If they could get it to 30 mpg (maybe with a lower-powered V6 diesel?), I suspect they would have a winner.

My personal view is that, with the coming inflation of fuel prices to the $5-$6 per gallon range not far off, 30 mpg highway is going to become the minimum acceptable fuel economy for most Americans for a new vehicle.

All of that said, I would applaud GM if it would bring the 4.5 to market. Any improvement in truck fuel economy would be welcome at this point.
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Old 06-19-2010, 12:10 PM
 
Location: Planet Eaarth
8,954 posts, read 20,690,657 times
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IMO both gas engine & transmission development have eclipsed the need for a diesel in all applications except towing.
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Old 06-19-2010, 12:56 PM
 
8,317 posts, read 29,486,213 times
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Quote:
Originally Posted by Tightwad View Post
IMO both gas engine & transmission development have eclipsed the need for a diesel in all applications except towing.
I disagree. We just don't see the really great diesel engines and fuel economy in the US because the hare-brained EPA refused to adopt the plenty-strict-enough European diesel emission standards and went off and adopted a relatively unworkable standard of its own. European diesel vehicles typically get at least 25% better fuel economy than an identical gasoline-engine equipped vehicle. (I drive a diesel vehicle that actually gets nearly 50% better fuel economy than its gasoline twin, and performs far better while doing it.) If we could magically wave a wand and have all US vehicles equipped with diesel engines that achieved that 25% improved fuel efficiency, it would reduce our automotive petroleum use by one-fifth, without doing anything else. In addition, diesel fuel can be more readily made from non-petroleum sources (coal, biodiesel) than can gasoline.
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Old 06-19-2010, 07:41 PM
 
Location: Columbia, California
6,664 posts, read 30,629,100 times
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I would have bought my Ford truck with a diesel if available. I have the 4.6 three valve motor but would have eagerly bought a diesel.
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Old 06-19-2010, 08:27 PM
 
Location: Lafayette, Louisiana
14,100 posts, read 28,547,446 times
Reputation: 8075
With the torque and pulling power it seems diesel engines are made for truck duty. A small truck with a four cylinder diesel could have the pulling power of a V6 engine.
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Old 06-19-2010, 08:44 PM
 
Location: The Ranch in Olam Haba
23,707 posts, read 30,772,243 times
Reputation: 9985
This is the PU of choice with diesel in Europe:

ISUZU:Isuzu D-MAX

I drove one for a few weeks while in the middle east and it was in par with my 1500.

GM had the chance to bring it to our shores. Instead they rebadges GM's with the Isuzu label on them instead of the other way around.

Last edited by Pruzhany; 06-19-2010 at 08:54 PM..
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Old 06-19-2010, 09:40 PM
 
3,045 posts, read 5,005,270 times
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My dream car is a Ford Transit Connect with a 4-cyl diesel.
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