Precision Formula™

Protect your fleet. Grow your bottom line.

Nearly half of all engine breakdowns occur due to cooling system problems. Prevent engine failure and make sure your coolant is maximizing your fleet’s performance with a free testing kit from HD Expert.

Get Your Free Test Kit Today

  • What's in your fleet?*

Your free HD Expert analysis includes detailed information on:

  • Contamination levels
  • pH levels
  • Corrosion inhibitor levels
  • Foaming properties
  • Freezing & boiling points

Not ready for your free, comprehensive coolant test kit?

You can use a refractometer to test a coolant’s freeze and boil protection and test strips to determine select corrosion inhibitor levels.

Have a question? We’re here to help.

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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

Extreme temperatures
Aluminum engines
Wet Sleeve liner cavitation