Precision Formula™

Learn More

Get expert training on coolant fundamentals and troubleshooting at HD Expert’s Coolant University

Specialized Formulations for Heavy Duty Engines

Engine protection

HD Expert coolants have special additives for unparalleled engine protection.

Temperature control

Not too hot and not too cold – HD Expert coolants keep your engine at the right operating temperature.

Long service life

Avoid unnecessary service with HD Expert extended life coolants.

Introducing Proshield®

• Reduced need for coolant extender
• 2-EHA free organic additive technology

Protect
Extreme temperatures
Aluminum engines
Wet Sleeve liner cavitation
Defend
Corrosion
Deterioration
Rust