CoElkHunter
AH ambassador
Whatever happened to the “push” for biodiesel which has the highest lubricity diesel without adding an additive to petroleum diesel? In this country, a fortune is being spent growing corn for adding 10 percent or more of ethanol to gasoline but almost nothing for biodiesel. On my trips pulling my fifth wheel across the country, I’ve only seen and bought biodiesel in Texas and Californicate. What’s up?There are only 4 grades if diesel fuel
#1 which works best in cold climates.
#2 for most if not all vehicles. Light and heavy trucks and farm machinery.
#4 for heavy industrial use or low speed engines.
And then biodiesel.
I'm not counting bunker fuel that large ships use.
Cetane levels can fluctuate depending on the fuel mix. This is why mileage goes down during the winter when more #1 is mixed with #2 to prevent gelling.
A huge problem in a marine environment is the storage of the fuel. Is it in a old rusty steel tank or a new modern fiberglass tank, then there are the lines from the tanks to the pumps. It's the same problem with farm tanks that sit up on a stand. They are usually older and made out of steel. Very few of these tanks incorporate a water separator before or after the pump, and the pickup in the tanks is down on the bottom of the tanks where all the crud and water sits.
But in the end all of the diesel that is shipped out of the refineries for vehicle use is exactly the same except for the dye for off road .