Coolant of less than 30% concentration has a less rust-proof effect. Also, if the concentration exceeds 60%, the antifreeze effect and cooling capability of the coolant become deteriorated, causing detrimental effects on the electric motor unit. Therefore, the service concentration range must be observed without fail.
Use the Mitsubishi genuine Dia Queen Super Long Life Coolant Premium without adding water because the concentration is preadjusted to 50%.
Using a hydrometer, check if the coolant concentration is within the standard value range.
Standard value: 30 to 60% (service concentration range)
