2001400ex wrote:
deltabravo wrote:
I agree with the OP.
I ran the same route over 100 times doing RV transport between Spokane to Pendleton and back with my 06 LBZ. I played with my speed a lot. Slowing down helped my profit margin. I could easily get 22.5 mpg running empty at about 60 mph.
The OP is arguing nothing can help the mileage of a diesel because of the way they work. Which totally isn't true. As I've mentioned, gearing and a 10 speed transmission can effect and improve mileage. Same thing is the could get cylinder deactivation to work on a diesel.
The manufacturers can improve fuel mileage if they wanted to invest in it.
BTW, I am at 19.5 mpg on this tank of diesel, a few days commuting to work and a trip last night from Spokane to Pullman for the football game.
Where did I argue that nothing can help the mileage of a diesel because of the way they work? I actually stated that by adding more power to a diesel there won't be a mileage penalty. This has been proven many, many times over with people that run tuners. Diesels work by running dead lean or dead rich with no throttle plate. They can run so lean they don't much more than a few drops of fuel at idle to going so rich you can hydraulic them.
Unlike diesels, gasoline engines run right at stoichiometric conditions. Run much more than stoichiometric and the engine will burn itself up or won't run at all. Run much less and you will burn a bunch of fuel and lose a bunch of power.
As far as manufactures not doing everything they can in their power to use every single drop of fuel to make the best power and economy is just a crazy statement.
Why do you think you can get 20 MPG and have more power on tap than any big block gas engine EVER made in history. It's not because the manufactures are resting on their laurels.
As far as cylinder deactivation on diesels. There is a reason for that. This is just one (there are more) If you ever turned one cylinder off on a diesel by killing off an injector you would understand. :R
