In the USA, highway fuel varies from clear to yellow. Off road fuel is dyed red.
Yellow
the color and diesel is oily.
Yellow is the most common color used. If you used any other color be sure and label it Diesel.
green
They can use either on-road diesel (billed out as reefer fuel, as its use is non-taxable) or red dyed off-road diesel.
Diesel engines run on diesel fuel. Gasoline will destroy a diesel engine.
Sulfer & water content....and if it's off road diesel fuel - the color. It won't cause problems to use diesel in a heating oil tank, but it will cause a whole lot of trouble if you use heating oil in a diesel tank
A diesel generator can be any color you like...orange with pink polka dots would be nice. However, manufacturers are aware that diesel fuel stains things, so they generally paint with a color that doesn't show diesel oil stains too badly.
Yes, diesel is a bio fuel
It's just a dye to differentiate it from other grades of fuel. Some diesel fuel has a red dye to indicate that it is ultra-low sulfur grade.
If the van has a diesel engine, then you MUST use diesel fuel. Unleaded gasoline will destroy a diesel engine. Diesel fuel is also used as a lubricant in a diesel engine. The use of any other fuel except diesel will result in serious damage. If you have put unleaded in your diesel, do not start or drive this vehicle until you drain the tank and change all the fuel filters.If the van has a diesel engine, then you MUST use diesel fuel. Unleaded gasoline will destroy a diesel engine. Diesel fuel is also used as a lubricant in a diesel engine. The use of any other fuel except diesel will result in serious damage. If you have put unleaded in your diesel, do not start or drive this vehicle until you drain the tank and change all the fuel filters.
Where is the diesel fuel filtered