Lube Advisor

Sinclair Synthetic Blend Heavy Duty Diesel Engine Oil

Heavy Duty Engine Oil

The Sinclair family of Synthetic Blend Heavy Duty Engine Oils provides extra protection against friction and tougher, longer lasting performance, compared to Conventional Engine Oil.

The Protection Today's Engine Designs Demand

Today’s engine designs have progressed and put new demands on engine oil, as OEMs manufacturers increase horsepower, turn up engine heat, reduce emissions and improve fuel mileage, Sinclair Synthetic Blend Heavy Duty Engine Oil has progressed as well. It takes the most advanced engine oils meet the difficult challenges of effectively balancing durability, extending drain intervals and protecting emissions control devices, and Sinclair delivers performance you’ll notice.

Heavy-Duty Protection – Keeping Engines Running Smooth

Advanced Sinclair technology provides friction and anti-wear benefits that continue to perform in spite of severe engine temperatures, while also delivering improved fuel economy.

Sinclair Synthetic Blend Heavy Duty Engine Oils: Performance You'll Notice

Sinclair Heavy Duty Diesel Engine Oils are specifically engineered and formulated to give you:

Protection

Outstanding performance for extended drain intervals.

Up to 1.6% improved fuel mileage with HD 10W-30 grade.1

Toughness

Increased wear protection by up to 53%.

Learn More 

Endurance

Better oxidation control up to 83% and deposit control up to 63%.2

Learn More 

¹ Using HD 10W-30 CK-4, compared to Conventional HD 15W-40 CK-4 during on-highway long-haul service. Savings will vary on idle time and other driving conditions of your fleet or vehicle.

² Compared to new limits of API CK-4 requirements.

Sinclair Synthetic Blend Heavy Duty Diesel Engine Oil

Sinclair Synthetic Blend 15W-40 CK-4 Heavy Duty Diesel Engine Oil

Sinclair Synthetic Blend 15W‑40 CK‑4 is technologically advanced heavy duty diesel engine oil that provides extra protection and performance, compared to Conventional Engine Oil.

Product Details 
SI15KB4P - Sinclair Synthetic Blend 15W-40 API CK-4.png
Sinclair Synthetic Blend Heavy Duty Diesel Engine Oil

Sinclair Synthetic Blend 10W-30 CK-4 Heavy Duty Diesel Engine Oil

Sinclair Synthetic Blend 10W-30 CK-4 is technologically advanced heavy duty diesel engine oil that provides extra protection and performance, compared to Conventional Engine Oil.

Product Details 
SI13KB4P - Sinclair Synthetic Blend 10W-30 API CK-4.png