Specifications
DFP4 2011 Operation Manual   
25
4.2. Fuel 
The information in this section refers to the fuel that should be used in your DEUTZ 
engine. 
4.2.1. Quality 
Use commercially available diesel fuel with less than 1.0% sulfur content. Fuels with a 
sulfur content greater than 1% are not allowed. The following are the approved fuel 
specification / standards to be used with your DEUTZ Fire Protection Engine: 
•  EN 590: 2004 
•  ASTM D 975-96; 1-D and 2-D 
4.2.2. Winter-Grade Fuel 
Diesel fuels are never to be mixed with gasoline (petrol)! 
Mix in tank only! Fill with the appropriate amount of Kerosene first, and then 
add the diesel fuel. 
At low temperatures waxing may occur in the fuel system thus reducing engine 
efficiency. If the ambient temperature is less than 0°C or 32°F, winter grade fuel 
(suitable down to -15°C or 5°F) should be used. This type of fuel is usually available 
from filling stations well in advance of the cold months. Diesel fuel containing additives 
(Super diesel) is often on sale and for use down to temperatures of -20°C or -4°F. 
•  At temperatures below -15°C (5°F) to -20°C (-4°F), Kerosene should be added to 
the diesel fuel. The relevant percentages are given in the diagram below.  










