Presidential Full Synthetic Diesel 5W40 – Heavy-Duty Protection for Modern Diesel Engines

Presidential Full Synthetic Diesel 5W40 is a premium-grade 5W40 full synthetic diesel oil designed to meet the intense demands of today’s high-output diesel engines.

Formulated with advanced Group III base oils and a proprietary additive package, this 5W40 diesel oil delivers superior protection, durability, and performance in even the harshest operating conditions.

Built for fleets, construction equipment, agricultural machinery, and diesel trucks, this synthetic 5W40 for diesel engines excels in extreme temperatures—from freezing cold starts to high-heat, heavy-load environments. It maintains consistent viscosity and film strength, reducing metal-to-metal contact and minimizing engine wear.

This API CK-4 motor oil is fully compatible with modern emissions systems, including diesel particulate filters (DPF), exhaust gas recirculation (EGR), and selective catalytic reduction (SCR). It helps control acid buildup, reduces soot formation, and resists oxidation—extending oil life while protecting after-treatment systems from harmful deposits.

In addition, this product offers:

• Excellent low-temperature pumpability for reliable cold starts

• Outstanding thermal stability for high-load performance

• Advanced wear protection, keeping engines clean and efficient

• Reduced oil consumption and sludge formation, lowering maintenance costs

• Fuel-saving friction modifiers, improving overall efficiency

Whether you’re servicing an entire fleet or a single heavy-duty truck, Presidential Full Synthetic Diesel 5W40 delivers long-lasting engine protection and exceptional value.

It’s a diesel engine oil for trucks that works as hard as your equipment does—day after day, mile after mile.

Proudly made in the USA, this 5W40 diesel oil reflects the quality and innovation behind the Presidential name. When you need a cold weather diesel oil that performs in every condition, choose Presidential for protection you can count on.

• Modern diesel engines using ultra-low sulfur diesel fuel and equipped with diesel particulate filters, exhaust gas recirculation, and selective catalytic reduction. Our 5W 40 Full Synthetic Motor Oil with the latest API specification CK-4 is designed to meet the needs of all diesel engines.

• Provides better performance in terms of aeration performance, wear protection, oxidation control, acid neutralization, deposit protection, and shear stability when compared to CJ-4. Keeps engines and pistons clean and increases drain intervals. Superior oxidation control and protection against acid build-up that can cause rust. Provides outstanding cylinder, bearing, and ring wear protection.