Motor Oil | SAE Viscosity : SAE 15W-40 | API Service Rating heavy duty | Engine Type : Gas & Diesel | Engine Cycle : 4-Stroke | Package Size : 55 Gallon Drum 
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15W-40 Conventional Heavy Duty (HD) Diesel Engine Oil (DEO), 55 gallon barrel,  is designed and formulated to provide improved performance compared to conventional 15W/40 products.   It is suitable for virtually all modern low-emission heavy duty engines and older hard-working diesel engines. With its wide range of specifications and approvals from many of the world’s leading engine makers, it is an excellent choice for on-highway fleets, general haul, construction, agriculture, public-transport operators and diesel pick-up trucks.   15W40 HD DEO is formulated to meet or exceed the warranty requirements of most manufacturers of diesel and gasoline engines as well as older engines and higher sulfur fuels (500 ppm and above). 15W-40 HDDEO can be used with complete success in over-the-road diesel trucks, off-highway diesel equipment, farm tractors, and passenger cars and light trucks with diesel, turbo-charged diesel engines, or gasoline engines and is backward compatible with previous API Oil Categories.  There is absolutely no harm in mixing different grades of engine oil!  Compatible with Rotella, Delo, Delvac and most major oil manufactures.   All motor oils are required to comply with international standards which include a compatibility test. This means that any branded engine oil will mix with the standard test oil in any proportions and the mixture will still perform as specified.   This 15W40 Heavy Duty Diesel Engine Oil also meets the extra demanding diesel engine requirements of older Caterpillar, Detroit Diesel, Mack and other high-output power plants in all levels of service.