Read that in an article in the local truck rag.

Of course, this means nox and PM. Nasty stuff, really.

I noticed the city busses running on bio-diesel were smoking at idle but clean under load.

I just got a new 07 KW with one of the last 06 motors in it. Salesman told me that the price is going up something like 10,000 to 15,000 dollars next year as a direct result of the new emissions...crazy

And the fuel mileage is going down. I thought we were gonna reduce our dependency on foreign oil?

According to CAT, their new 07 engines will get the same fuel economy as the earlier ACERT engines. Cost will be $7K-$10K more.

ULSD is lower in energy content, so your going to get less MPG regardless of what CAT is saying. It will burn cleaner, but will net less mpg. Same is also true for Biodiesel. Burns cleaner, and is actually better for your engine, but is less energy dense.

Longsnowsm

I am currently getting between .5 to .75 MPG less since the USLD fuel came out.

I was getting 6.75 to 7 MPG regularly. Now it is 6.2 to 6.5. This is with a non EGR Mercedes 450. The EGR Mercedes we use are getting in the mid to high 5's with the new fuel.

The fuel supposedly burns cleaner, meaning less pollution. The problem is you use more fuel than the older version, which got less MPG than the fuel before it. So, that means more pollution from drilling, pumping, refining, and transporting all the extra fuel that is being used.

Something just don't seem right. How can all the pollution associated with the production and use of millions of gallons of extra fuel not cause as much, or more pollution than the pollution the ULSD is meant to stop.

Apparently it only has 1% less energy. Remember, it's getting colder/windier now.

The new fuel wont affect a pre-2007 engine too much. The only reason they removed the sulphur was because it plugged the particulate traps.

Overdrive article was stating that engineers originally expected low sulfhur fuel to reduce energy content by 1% (and increase fuel consumption by the same) however they were saying new reports are saying that the new fuel may be identical to No 2 diesel.

Since it's mandated, guess everyone will be finding out for themselves soon.

And you thought, what, the EPA regulates trucks just to reduce emissions?? :lol: :lol: :lol:

During the warmer months I try and run Biodiesel in my Jeep as much as possible. It smokes on acceleration much less with Bio. I have not noticed a significant change in mileage (22-25mpg) but I'm still in the break in phase of the engine.

The new ULSD is going to allow a whole generation of new small diesels for passanger cars. Heck Honda is even going to offer a diesel in a few years.

http://world.honda.com/news/2006/c060925DieselEngine/