Home >> Land Rover >> 2021 >> Defender 90 S >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling - INGENIUM 2.0L Petrol/INGENIUM I4 2.0L Petrol - PHEV -- Defender/L663 >> Engine Cooling - INGENIUM I4 2.0L Petrol/INGENIUM I4 2.0L Petrol - PHEV (G2344342) >> General Procedures >> Cooling System Partial Draining And Vacuum Filling (G2390776) >> Special Tool(S) >> Notes