TOP TIER™ Diesel Fuel
DIESEL
Introduced in 2017

TOP TIER™ Diesel Fuel was introduced in 2017 by a consortium of automotive and equipment manufacturers using diesel engines.

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TOP TIER™ Diesel Fuel was developed to provide better performance, in turn helping the diesel fuel retailers, auto and engine manufacturers, and particularly those who drive or use diesel-powered equipment. 

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Relative to the ASTM D975 and D7467 specifications for diesel and biodiesel blended fuel in the U.S., the TOP TIER™ Diesel Performance Standard requires additive packages and good housekeeping practices to:

• reduce deposits on the fuel injectors (both internal and external),

• improve lubricity (less wear on injectors and in the engine)

• improve fuel stability (less deposits in the fuel system components)

• provide increased protection against water and particulates introduced into the fuel before being dispensed into the vehicle or equipment.

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Today’s diesel engines typically utilize high pressure common rail (HPCR) technology and HPCR engines will benefit from the TOP TIER™ diesel fuel properties developed by a consortium of light-duty and heavy-duty diesel original equipment manufacturers (OEMs).  Retailers offering diesel fuel and biodiesel blends meeting the TOP TIER™ diesel requirements display the TOP TIER™ diesel logo at dispensers.