I have a 1998 Chevy/GMC Blue Bird Mini that has: 6.5L Detroit Diesel. This engine uses Indirect injection as its fuel delivery to the pistions. This link pic/info https://en.wikipedia.org/wiki/Blue_Bird_Mini_Bird
I had the transmission replaced when I get it. Besides that Everything in it is stock.
I seem to be averaging 9.5 to 10 MPG on average.
I cant find what fuel economy it should be getting anywhere and I have been searching quite a bit.
I've been spending lots of time reading this forum and have seen a few references to changing the rear differential gearing (or something in the back end) and would like to know what ratio my has now and what I could change it to to increase MPG.
Beyond that, any little tips of mods that could be done to squeeze even 1 MPG overall outa this beast.
Would stopping the flow of the water to the various heater cores while driving in anyway increase the MPG?
I travel constantly so every MPG I save is very worth it to me.
My RPMs max around 3700 but I generally run around 2150.
My automatic transmission wont change into OverDrive until 55 mph around 3200 RPMs. I idle at 600 while resting and 700 while coasting a hill in neutral.