Interesting study. I'm not 100% convinced it emulates what is happening in the injectors, pump and upper cylinder of an engine with heat and pressure though. One thing does seem to click with me though and that's that biodiesel always improved my milage and quited my engines (I drove 120,000 miles a year for way too many years). And way better yet, straight vegitable oil
(when propperly dewatered, filtered and burned in a well designed system-NOT just added to the tank!). As we aren't required to burn "on road diesel" in boats, I wonder if the "off road diesel" sold around here for tractors and dyed red compares?- the same stuff as Number 2 diesel used for home heating
, without the federal and state road tax. It still has the greasy feel like diesel used to have before ULSD.