HD Expert AntiFreeze/Coolant includes 5 proprietary formulas developed that optimize engine performance, safety and longevity–for the toughest jobs, harshest conditions, and longest hauls.
We produce the highest quality coolant directly in our manufacturing plant, and fulfill to you wherever you are.
We know HD coolant. That’s the reason we’re the OE factory fill for big names in HD equipment. We’ll help you be an expert too— with FREE test kits you can give to your best customers. Get the facts with HD Expert lab testing. Limited time offer.