Valvoline Heavy Duty Full Synthetic Diesel Engine Oil SAE 15W-40
Valvoline Heavy Duty Full Synthetic Diesel Engine Oil SAE 15W-40
EXCELLENT
Full synthetic formula is proven to maximize diesel engine life
ENDORSED
35% reduction in valve train wear vs. industry standards as tested in Cummins ISB engine test
PROTECTS
Engineered to control wear, deposits and oil breakdown while meeting low emission requirements
ADVANCED
Up to 28% longer oil life vs. industry standards as tested in Volvo T-13 engine test
No task is too tough for Valvoline Heavy Duty Diesel Full Synthetic 15W-40 Engine Oil. It’s specially formulated with fully synthetic base oil and targeted additive technology for heavy duty diesel engines operating in extreme duty cycles or severe environmental contamination conditions, including construction equipment, on-highway fleets, agriculture machinery and more. Valvoline Heavy Duty Diesel Full Synthetic is the ultimate protection against severe temperatures, and it’s engineered to control wear, deposits and oil breakdown in Cummins, Detroit Diesel, Volvo, Mack, Ford, Caterpillar and more. Proven to maximize diesel engine life and meet low emission requirements, our latest addition to the Valvoline Heavy Duty Diesel lubricant lineup delivers enhanced viscosity and oxidation stability. No matter the weather, you can count on excellent year-round performance. For superior wear protection in harsh environments and extreme applications, trust Valvoline Heavy Duty Diesel Full Synthetic 15W-40 to work as hard as your equipment.
See It In Action
The only one endorsed by Cummins
Premium Blue Full Synthetic provides extreme protection for heavy-duty diesel and gasoline engines, plus improved fuel economy vs. conventional oils.
Common
Questions
Everything you need to know about this product. Can't find what you're looking for? Reach out to our team.
It depends. Some vehicle manufacturers provide a range of recommended motor oil viscosity grades based on the outside temperature in which the car is driven. Other manufacturers recommend the use of only one motor oil viscosity grade. For best engine performance, always follow the manufacturer's recommendations found in your vehicle’s owner’s manual.
The "w" in motor oil stands for winter. The first number in the oil classification refers to a cold weather viscosity. The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil. The higher number, following the “w” refers to hot weather viscosity, or how fluid your oil is at hot temperatures. The higher the number, the thicker the oil at a specified temperature.
The starburst symbol means that the oil meets the requirements of the International Lubricants Specification Advisory Committee (ILSAC) in addition to the requirements of API, as stated in the API starburst symbol on the back of the bottle. Only certain viscosity grades are eligible for the starburst symbol.
Some motor oil brands claim 20,000-mile oil change intervals. But it comes down to individual driving habits, conditions, and ultimately what’s recommended in your vehicle owner manual. Valvoline recommends referring to your owner’s manual for oil change intervals.
The following Valvoline motor oils meet or exceed the requirements of GM standard dexos 1™ Gen 3: • Extended Protection Full Synthetic • Advanced Full Synthetic • Valvoline Full Synthetic