HPL PRO ATF 40 Race Transmission Fluid

HPL Pro ATF 40 is a medium-heavy viscosity automatic transmission fluid designed for high-performance racing applications requiring exceptional thermal stability and increased torque converter control. As one of the most popular viscosities in the HPL Pro-Series lineup, Pro 40 provides an ideal balance of high-temperature protection and tuning capability for demanding race environments.

Engineered for vehicles that generate extreme transmission temperatures, HPL Pro ATF 40 utilizes advanced synthetic chemistry to resist oxidation, viscosity breakdown, and fluid degradation during repeated high-load passes. Its viscosity characteristics can help promote slightly tighter converter behavior, giving racers another tool to optimize consistency and performance at the track.

Technical Highlights

• Medium-heavy viscosity formulation for dedicated race applications
• Approx. 15.50 cSt @ 100°C
• Can promote slightly tighter torque converter characteristics*
• Excellent balance of fluid film strength and converter response
• Exceptional resistance to heat, oxidation, and viscosity breakdown
• Helps maintain consistent shift quality during repeated passes
• Fully compatible with all HPL Pro-Series ATF viscosities for custom blending
• Intended for dedicated race vehicles only

Ideal Applications

• High-horsepower drag racing combinations
• Turbocharged vehicles experiencing extreme transmission temperatures
• Racers looking for a balance of converter control and protection
• Applications requiring consistent performance under repeated high-load conditions

Trackside Tuning: All HPL Pro-Series ATF viscosities (Pro 10, 20, 30, 40, 50, and 60) are fully compatible and may be blended to achieve intermediate viscosities, allowing racers to fine-tune transmission and torque converter performance between rounds.

KEY FACTS about HPL PRO Transmission Fluid

• Unsurpassed temperature protection

• More consistent fluid behavior with temperature swings

• Aggressive clutch grip reduces slipping

• Extreme anti-wear protection

• Less parasitic loss for increased performance

• Increased service life

• Made in the USA

WARNING - Proposition 65 Warning:

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. 

www.P65warnings.ca.gov

Have Questions? Call us 219-996-3461