hypermiling with a vacuum gauge for diesel?
First, does anyone know if a vacuum gauge would work on my 300Tdi like it works on petrol engines to determine "mileage". In other words is there the same kind of relationship between vacuum and fuel usage in a diesel as there is in a gas engine? If so, where would you tap into the vacuum?
The reason I ask is a new experiment in going for even higher miles per gallon with my 300Tdi than the 28mpg I'm currently getting. I recently bought a Honda Insight hybrid as a commuter car and am getting around 60mpg out of it. The interesting thing about driving the Honda is how much I'm learning about the world of "hypermiling"...there are websites devoted to getting incredible mileage out of rather ordinary cars not just hybrids...like 50mpg out of a Saturn sedan for example. Anyhow, it struck me that some of this rather geeky knowledge I've been discovering could be ported to our trucks. The "pulse and glide" driving technique, higher tire pressures, and so on...
anyway, if you know about this vacuum gauge thing, I'd be interested to hear.