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.
You can use a refractometer to test a coolant’s freeze and boil protection and test strips to determine select corrosion inhibitor levels.
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HD Expert coolants have special additives for unparalleled engine protection.
Not too hot and not too cold – HD Expert coolants keep your engine at the right operating temperature.
Avoid unnecessary service with HD Expert extended life coolants.