You could radically cut your fuel costs by running an SVO/WVO system, or even by blending veggie oil. The MB diesel engines love the stuff, and once you get a good supply, it's not too big of a hassle for the massive cost savings you can realize.

SteveM

__________________
'93 190E/D 2.5 Turbodiesel 5-speed (daily driver)
'87 190D 2.5 Turbo rustbucket - parts car
'84 Dodge Rampage diesel - Land Speed Record Holder
'13 Ram 2500 Diesel
'05 Toyota 4Runner