HD Expert is focused on formulating heavy duty engine antifreeze/coolants that get the job done — so you can keep doing yours. Their specialized formulas are made for the hardest working heavy duty engines on earth.

ADVANCED COOLANT TECHNOLOGY
HD Expert’s team of researchers and technicians have fine-tuned their line-up of HD coolants, each offering the most advanced technology for maximum performance.

CORROSION PREVENTION
A clean engine is a cool engine. HD Expert’s specialized formulas stop corrosion in its tracks for all cooling-system metals.

THERMAL INTEGRITY
Calibrated to handle the most extreme climate conditions, HD Expert’s formulas enable efficient heat transfer to regulate critical system temperatures.

LONGEVITY
HD Expert’s coolants combine unique corrosion inhibitors and superior functional additives, providing optimum performance and maximum stability.