Top Tier

All DD Platform engines can operate on Ultra-Low Sulfur Diesel (ULSD) fuel. For optimal fuel system performance, Detroit Diesel recommends Top Tier Diesel (see figure below). This standard is a voluntary retailer program that has supplemental requirements that exceed ASTM standards, and also has provisions for quality control of the fuel distribution.

Fig. 1,

For more information on Top Tier Diesel Fuel, please visit TOP TIER™ Diesel Fuel (

Document Number:0000061843