Precision Formula™

Coolant that works as hard as you do

  • Classic
  • Premium
  • Extra
  • Endurance
  • Extreme
  • Extend

SOLUTIONS FOR EVERY HD APPLICATION

Choose your industry to find the product that’s right for you.

Our complete line up of HD Expert coolant technologies are specially formulated to ensure every type of heavy-duty application stays up and running.

Developed by our team of expert engineers, these precise formulas keep engines cool and clean, so they can get the job done.

HARD WORK DOESN’T HAVE TO BE HARD ON ENGINES

Learn More

STATE-OF-THE-ART ENGINE PROTECTION

Today’s diesel engines are more compact, operate at higher temperatures under increasing loads and have more emissions control equipment than their predecessors. Most importantly, engines and cooling systems are increasingly made from aluminum as opposed to cast iron.

HD Expert products powered by the ProShieldTM OAT Corrosion Defense system form chemical barriers that protect internal engine components from corrosion, cavitation erosion and scale that occur as water and glycol age and degrade in the cooling system.

Learn more about ProShieldTM OAT--the leading edge of coolant technology.

Download the whitepaper

PROTECTION FOR FLEETS OF ALL SIZES

Whether you’re maintaining a single vehicle or a diverse fleet, HD Expert has what you need.

OUTSTANDING SERVICE LIFE

How does your coolant measure up? Find out with a free test.

Get the test

IT PAYS TO STAY COOL UNDER PRESSURE

The Guarantee
Our precise formulations meet or exceed the requirements of every major OEM—
That’s the HD Expert GuaranteeTM. Parts and fluids are covered for the
entire service life of any on or our coolants.

If there’s contact it’s covered. It’s that simple.

Learn More

PROTECT YOUR FLEET

REQUEST A FREE CONSULTATION

The functionality demands from modern coolants are greater than ever before. Is your current engine coolant putting your fleet at risk of costly downtime? Find out with a free consultation from HD Expert.

Get free consultation