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Heavy-Duty Diesel Oil

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Heavy-Duty Diesel Oil

Today’s equipment is working harder under harsher conditions to produce the same output as it always has. As the going gets tough, Schaeffer’s heavy-duty diesel oils provide the extra muscle your engine needs to preserve durability.

When operating temperatures rise, our proprietary additives allow our oils to maintain performance for more hours and over more miles. Better oxidation and thermal stability means optimal performance, less oil consumption and longer component life.

Strong Oxidation and Thermal Stability

Schaeffer’s robust oils resist breaking down in higher operating temperatures, allowing your equipment to consistently run effectively.

Superior Soot Busting Performance

Blended with enhanced detergency and dispersancy additives, our oils shield your engine from low temperature sludge buildup and high temperature deposits.

Reduces Wear, Scuffing and Abrasion

Schaeffer’s oils are formulated with proprietary friction modifiers Micron Moly and Penetro to reduce wear and friction on bearings, rings, pistons, cylinders and valve-trains.

Cold Weather Startup Protection

As temperatures drop, Schaeffer’s synthetic oils still flow freely and quickly circulate throughout your engine the moment it starts. Our full synthetic oils provide maximum cold weather startup protection in temperatures as low as -40°.

Up to 5% Fuel Savings

Schaeffer’s synthetic oils are routinely tested each year, and the results consistently show our oils produce real savings to your bottom line.

Consistent Fuel Economy

Less Wear

Less Sludge

700 SynShield® Durability Advantage 15W-40

Para-synthetic, heavy-duty, 15W-40 diesel oil that provides stronger durability, better soot control and stronger wear protection to equipment working long hours in severely harsh conditions. Exceeds API CK-4.

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711 SynShield® OTR Plus 10W-30

Para-synthetic, heavy-duty, 10W-30 diesel oil that delivers better fuel economy benefits with maintaining engine durability to keep your equipment running long after it’s been paid off. Exceeds API CK-4.

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Schaeffer Supreme 9000

9000 9000 SynShield® OTR Plus Full Synthetic 5W-40

Full synthetic, heavy-duty, 5W-40 diesel oil that delivers better fuel economy benefits with maintaining engine durability to keep your equipment running long after it’s been paid off. Exceeds API CK-4.

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9012 SynShield® OTR Plus Full Synthetic 10W-30

Full synthetic, heavy-duty, 10W-30 diesel oil that delivers better fuel economy benefits with maintaining engine durability to keep your equipment running long after it’s been paid off. Exceeds API CK-4.

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722 SynShield® Ultra Performance 10W-30

Para-synthetic, heavy-duty, 10W-30 diesel oil that provides stronger durability, better soot control and stronger wear protection to equipment running in stop-and-go, excessive idling and short haul situations. Exceeds API CK-4.

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723 SynShield® Ultra Performance Full Synthetic 5W-30

Full synthetic, heavy-duty 5W-30 diesel oil that provides stronger durability, better soot control and stronger wear protection to equipment running in stop-and-go, excessive idling and short haul situations. Exceeds API CK-4.

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6000 SynShield® Max MPG 10W-30

Para-synthetic, heavy-duty, 10W-30 diesel oil that delivers increased fuel economy benefits while maintaining wear protection, extended drain capability and high temperature performance. Exceeds FA-4.

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