Coastal Fleet 15W-40 CI-4 Diesel Engine Oil is a premium quality, multi grade engine oil for all-season use in commercial mixed-fleet engine operations. It is guaranteed to meet or exceed the performance requirements for naturally aspirated, turbocharged and supercharged diesel engines, requiring API Service Classification CI-4, as well as gasoline engines requiring API SL. It is not for use in EGR equipped diesel engines manufactured after 2007. Coastal Fleet 15W-40 CI-4 Diesel Engine Oil provides API Service CI-4, CH-4, CF/SL, also complies with obsolete CF-4, CF-2, C-F, CG-4, CD, CD-II, and CE. Coastal Fleet 15W-40 CI-4 Diesel Engine Oil has been approved for use in applications calling for MB-APPROVAL 228.3. It is suitable for use in applications calling for MIL-L-2104F, MIL-L-46152D, Mack EO-M Plus, EO-N, Ford M2C171-D, MAN 3275, Cummins CES 20078, 20076, and 20071, Caterpillar ECF-2, ECF-1A, DDC93K215, ACEA E3-96, E5-02, E7-08, Volvo VDS, VDS-2, and VDS-3. It is also suitable for use in applications specifying Allison C-3, C-4, and Caterpillar TO-2. Coastal Fleet 15W-40 Diesel Engine Oil has also been successfully used in Allison transmissions for coach bus fleets. Benefits Resisted breakdown under high temperatures Maintained oil pressure under heavy load conditions Minimized rust and corrosion Good low temperature pour point