SUNOCO Super C Gold 15W-40 CK-4 Diesel Engine Oil – 1 Gallon (Pack of 4) SUNOCO SUPER C GOLD 15W-40 CK-4 is a premium synthetic blend diesel engine oil formulated to exceed the latest API diesel specifications and meet the warranty requirements of most major diesel engine manufacturers. Designed for model year 2017 and newer heavy-duty diesel engines operating in high output service, this formulation is fully backwards compatible with engines requiring earlier API C service categories. It provides robust wear protection, enhanced oxidation stability, and excellent shear stability compared to previous API classifications. Applications: On-highway heavy-duty diesel trucks (long and short haul) Off-highway equipment (construction, mining, agriculture) Farm tractors and stationary equipment Marine diesel applications Mixed fleets requiring API SN gasoline compatibility Formulated using premium conventional and synthetic base stocks combined with advanced additive technology, SUNOCO Super C Gold 15W-40 ensures durability under severe service conditions. Industry Standard Compliance: Meets or Exceeds API Specifications: API CK-4, CJ-4, CI-4, CI-4 PLUS, CH-4/SN Compatible with vehicles requiring: ACEA E11, E7 standards ECF-3, ECF-2, ECF-1a specifications CES 20086, 20081, 20077 standards 93K222, 93K218, 93K214 specifications DQC III-18 LA requirements WSS-M2C171-F1 standards DH-2 specifications EOS-4.5, EO-O Premium Plus, EO-N Premium Plus standards MAN 3775 requirements 228.31 specifications MTL 5044 Type 2.1 standards RLD-3 requirements VDS-4.5, VDS-4, VDS-3 specifications Size: 1 U.S. Gallon (3.78 Liters) per container – Includes 4 gallons total. Important Safety Information: Combustible liquid. Avoid prolonged skin contact. Dispose of used oil properly.