When I bought my '85 K10 Burb,it had a nearly full tank--former owner put 10 gallons of kerosene in the tank the day I bought it,it was around thanksgiving in 2009...he told me the guy he bought it from had "converted it to run on biodiesel"...
(his mods consisted of cutting a hole in the floor to access the sending unit on the 40 gallon tank,and running about 15 feet of rubber fuel line all the way from an electric fuel pump mounted right behind the spring shackle on the passenger side, to a raycor filter on the firewall.."special hose" that wont swell up,etc..I see no other "special" things)!.
Lord knows what he may have been running the engine on--maybe used engine oil,veggie oil ?...I think the kerosene was added so it would start,and make the ten mile ride to my house without incident..
I have never registered it yet,and its only been moved around the yard a few dozen times,but I did start it up every so often to try and keep the batteries up,they died in 2013 though...
I bet I have let it run a good 10 hours sitting in it at fast idle over the years,and believe it or not--I still have 1/8th of a tank left !..and they say kerosene wont deliver as good fuel mileage compared to #2 diesel...
