Phillips 66® Syngear SS 75W140 Synthetic Gear Oil

Phillips 66® Syngear SS 75W140 is a premium synthetic 75W140 gear oil engineered to deliver exceptional protection, durability, and performance in demanding automotive and heavy-duty applications. Designed for extreme temperatures and severe operating conditions, this advanced lubricant helps extend gear life while maintaining consistent performance across a wide range of loads and speeds.

Advanced Synthetic Protection for Severe Conditions

Because Syngear SS uses high-quality synthetic base oils combined with a carefully balanced additive system, it resists oxidation and thermal breakdown more effectively than conventional gear oils. As a result, it minimizes sludge and varnish formation, even under sustained high temperatures. In addition, this formulation actively reduces wear, prevents scoring, and protects against metal fatigue and spalling caused by shock loads. Therefore, operators benefit from longer service intervals and lower maintenance demands.

Extended Drain and Thermal Stability Benefits

This 75W140 gear oil delivers outstanding oxidation resistance and thermal stability, which supports extended drain intervals in all-season service. Moreover, it maintains excellent viscosity control under high shear conditions, helping ensure consistent lubrication and dependable protection in high-torque environments.

Versatile Applications Across Automotive and Equipment Uses

Phillips 66 Syngear SS meets API GL-5 and MT-1 performance requirements, making it a reliable choice for a wide range of applications. It performs especially well in passenger cars and light trucks equipped with hypoid gear sets. Additionally, it is suitable for service fill in conventional differentials and for top-off applications in limited-slip differentials.

Broad Equipment Compatibility

This 75W140 gear oil also supports use in differentials, final drives, and transfer cases found in select off-highway equipment. Furthermore, it is approved for non-synchronized manual transmissions in trucks, buses, and heavy equipment where SAE 75W-140 is specified.

Reliable Performance in Any Season

Syngear SS offers outstanding low-temperature fluidity for fast lubrication during cold starts. At the same time, it reduces axle operating temperatures compared to conventional mineral gear oils. Because it protects against rust, corrosion, and foam formation, it delivers consistent performance in both everyday driving and severe-duty environments.

When equipment demands a high-quality 75W140 gear oil, Phillips 66 Syngear SS provides long-lasting protection, efficiency, and peace of mind.