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Home >> Honda >> 2021 >> Clarity Plug-In Hybrid >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - Service Specifications (Plug-In) >> Cooling System

Cooling System

Item  Measurement  Qualification  Standard or New  Service Limit 
Radiator Coolant capacity (including coolant reservoir) Engine overhaul 6.1 L (1.61 US gal) -
Coolant change 5.0 L (1.32 US gal) -
Coolant type   Use Honda Long Life Antifreeze/Coolant Type 2, and add Honda Extreme Cold Weather Antifreeze/Coolant Type 2. NOTE:  If the vehicle is regularly driven in very low temperatures (below -22 deg.F (-30 deg.C)), a 60 % concentration of coolant should be used.
Coolant reservoir Coolant capacity   0.6 L (0.16 US gal) -
Radiator cap Opening pressure   93-123 kPa (0.95-1.25 kgf/cm 2, 13.5-17.8 psi) -
Thermostat Opening temperature Begins to open 169-176 deg.F (76-80 deg.C) -
Fully open 194 deg.F (90 deg.C) -
Valve lift at fully open   10 mm (0.39 in) min. -