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COOLING SYSTEM - . ENGINE PROTECTION DRAIN AND FILL ENGINE COOLING SYSTEM . . To prevent corrosion of the aluminium alloy engine parts it is imperative that the cooling system is filled of clean water and the correct type of anti-freeze, winter and or water and inhibitor if frost precautions are not required. Never fill or top-up with water only, always add an inhibitor if anti-freeze is not used. NEVER salt water with an inhibitor otherwise corrosion will only clean rainwater or distilled water. Recommended solutions Anti-freeze Universal Anti-freeze or permanent type ethylene base, without methanol, with for aluminium engines and engine Use one part of anti-freeze one part water. Inhibitor Lubricants SQ36 inhibitor concentrate. 100 of inhibitor per litre of water. Anti-freeze can remain in the cooling system and will provide protection for two years provided that the specific gravity of the coolant is checked before onset second winter and topped-up with new anti-freeze as required. the factory have the cooling system filled with 50% of anti-freeze mixture. This gives protection against frost down to minus 47°C (minus 53°F). Vehicles so filled can be identified by a label affixed to t h e windscreen and radiator. After the second winter the system should be drained adding new anti-freeze examine all joints and renew hoses t o make sure that the system is leakproof. Inhibitor solution should be drained and flushed out and new where the purity of the water is qucstionablc. See the ‘General specification data’ section for protection quantities. parts. WARNING: Do not remove the radiator filler cap when the engine is hot because the cooling system is pressurized and personal scalding could result. 1. Remove the radiator filler plug. 2. Remove radiator drain plug and allow coolant to drain, if neccssary, into suitable container. Refit drain plug and washer. The drain plug is situated on the left-hand side of radiator towards t h e bottom facing the engine compartment. NOTE: Disconnect bottom hose to drain on radiators 3 . Remove the engine drain plugs, one each side of the cylinder block, beneath the exhaust manifolds. Allow the coolant to drain and refit plugs and washers. 1 |