Parts Master Fleet engine oil is formulated to provide optimum performance in modern low-emission diesel engines operating under a variety of service conditions including engines with cooled exhaust gas recirculation (EGR).

Blended with premium base stocks and high-quality additive chemistry to achieve the following benefits:

• High-temperature piston deposit control.
• Foam protection.
• Soot dispersancy and oil-thickening control.
• Oxidation inhibition and low-temperature sludge protection.
• Corrosion and rust inhibition.
• Valvetrain wear protection and TBN retention

Parts Master Heavy Duty 15W-40 Engine Oil is licensed API CK-4, CJ-4, and CI-4 PLUS. It is backward
compatible with older engines calling for API CI-4, and CH-4. Parts Master Heavy Duty 15W-40 Motor Oil also
meets the engine test requirements of:

• Cummins CES20086, CES20081, and CES20078
• Detroit Diesel 93K222, 93K218, and 93K215
• Mack EOS-4.5, EO-O, and EO-N
• Volvo VDS-4.5, VDS-4, and VDS-3
• Caterpillar ECF-3 and ECF-2
• Ford WSS-M2C171-F1 and WSS-M2C171-E
• API SN, SM, and all prior API gasoline categories