PENN GRADE1 10W-40 Synthetic Blend High-Performance Motor Oil, 12×1 qt Pack — Anti-Wear, Thermally Stable

PENN GRADE1 71446 is a synthetic blend SAE 10W-40 high-performance motor oil formulated to protect and lubricate highly stressed street and racing engines.

This 12-pack of 1-quart bottles combines PennGrade base stocks with advanced additives to deliver thermal stability, anti-wear protection, and reduced internal friction under demanding driving conditions. The formulation is aimed at engines that experience high loads, elevated temperatures, and frequent throttle changes—helping maintain lubrication film strength while resisting foaming and shear breakdown.

How does this oil stand up to extreme engine stress?

The blend is designed to preserve film strength at high temperatures and heavy loads, protecting bearings, camshafts, pistons, and rings from wear. Additive chemistry reduces friction and helps the oil resist thermal degradation so it continues to lubricate under racing or high-performance driving conditions.

• Formulated with PennGrade base stocks plus select additive technologies
• Improved shock-load protection for heavily stressed components
• High temperature resistance to limit thermal breakdown
• Anti-foaming and shear-stable for consistent viscosity

Will this oil improve horsepower and engine response?

While no oil creates additional power by itself, reducing internal friction can help the engine run more efficiently and maintain performance under stress. The oil’s additives lower friction and support consistent film strength, which may preserve horsepower at high loads compared with degraded or inappropriate oils.

• Friction-reducing additives for smoother moving parts
• Maintains lubricating film to prevent metal-to-metal contact
• Helps stabilize viscosity during aggressive driving

How should I use this 1-quart 12-pack and what vehicles is it suitable for?

Each 1-quart bottle is convenient for top-offs, oil changes, or as a service kit for multiple vehicles. SAE 10W-40 synthetic blend oils are commonly used in performance street cars, light-duty trucks, and certain sport or racing applications that call for this viscosity and blend type.

• 1-quart bottles for easy storage and individual service use
• Suitable for high-revving and heavily loaded engines needing 10W-40
• Handy for garages, race teams, and owners of multiple vehicles

What performance characteristics and protections does the oil provide?

This formula emphasizes anti-wear protection, shear stability, and resistance to thermal breakdown while offering anti-foaming behavior for consistent operation. Those characteristics together help preserve engine components and maintain lubricant performance during hard use.

• Outstanding film strength and anti-wear properties
• Good anti-foaming qualities for uninterrupted lubrication
• Shear-stable to retain viscosity under mechanical stress

Who is this for: PENN GRADE1 71446 SAE 10W-40 synthetic blend is intended for drivers, mechanics, and racing teams who demand a robust, ready-to-use lubricant for high-performance and heavily stressed engines. Choose this 12-pack if you want individual quart bottles for frequent servicing, track days, or maintaining several vehicles with a consistent, high-temperature-capable oil.