HOLTS RADIATOR COOLANT helps to prevent engine overheating. It also stops rust and maintains the cooling system in excellent condition by keeping flow channels clean and unrestricted.
It works best in a clean clean cooling system. Hence dirty systems that are overheating must be cleaned first with a radiator cleaner.
Directions for Use:first step is to drain the cooling system
second step is to add the contents of Holts radiator cleaner directly into the radiator, then run the engine at idle speed for 5minutes.