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 1W-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 1W-40 Motor Oil also
meets the engine test requirements of:

• Cummins CES008, CES0081, and CES008
• Detroit Diesel 3K, 3K18, and 3K1
• Mack EOS-4., EO-O, and EO-N
• Volvo VDS-4., VDS-4, and VDS-3
• Caterpillar ECF-3 and ECF-
• Ford WSS-MC11-F1 and WSS-MC11-E
• API SN, SM, and all prior API gasoline categories