I use to work at a company that sold the isuzu/gmc npr/nqr cab over, snub nose diesel trucks. They did get better fuel economy, but it was like 5 mpg. Tops anyone I knew of could get was maybe 20 mpg babying it. I am sure a better cab design for mroe aero would of lead to another 5 mpg or so.
Now our mobile mechanic swore bythe little grey bottle and said it gave him 7 more mpg out of his truck and better over all performance. I know my old 81 mercedes 240d had a chart in the owners manual and showed octane vs centane(SP?) rating and how to mix gas with diesel depending on the weather or diesel and kerosene(SP?) if diesel was not available and how it effected performance and weather. Maybe trucks are sensitive to that and a better mixture gave better mpg?
Quote:
Originally Posted by stillsearching
At least after reading this I can no longer claim the owner of the 3/4 ton 4x4 Suburban with a 4cyl Isuzu diesel from the early 90's that I saw was flat out lying about getting 44mpg.
|