How often should HyperKuhl be added in order to maintain full protection?
A. The corrosion inhibitors in HyperKuhl are slowly depleted over time. For this reason, it is recommended that a treatment be added once every year or 30,000 miles whichever comes first. After the 5th year, it is recommended that you drain, clean/prime the cooling system with HyperKuhl SuperFlush, and refill with the proper dosage of coolant and HyperKuhl SuperCoolant. To view the lab results of the HyperKuhl 5 Year Coolant Corrosion Test, click here.
