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A. A 354ml bottle of BG Cooling System Cleaner — single-vehicle pre-flush dose for typical passenger-car cooling system capacities (around 5–10 litres of coolant).
A. BG Cooling System Cleaner removes deposits, scale and contamination from the engine cooling system. Restores cooling efficiency, prevents premature water-pump and thermostat wear, and prepares the system for fresh coolant.
A. Add to the existing coolant in the cooling system. Run the engine at operating temperature for the recommended dwell time. Drain the cooling system, flush thoroughly with water, then refill with fresh coolant and BG Universal Super Cool (PN 546).
A. Yes. BG Cooling System Cleaner is formulated to be safe on aluminium, cast iron, brass, copper and modern cooling-system metals and elastomers when used as directed.
A. As part of a coolant change service — typically every 5 years or 100,000 km, whichever comes first. Earlier cleaning is warranted on engines showing overheating, slow warm-up, or rust/scale in the expansion tank.
A. No. BG Cooling System Cleaner is the pre-flush step before coolant replacement. The cleaner and contaminants are removed when the system is drained — fresh coolant (and ideally BG Super Cool 546) must follow.
A. For overheating caused by cooling-system scale and deposits restricting flow, yes. Mechanical overheating causes (failed water pump, stuck thermostat, blocked radiator core, head gasket failure) require physical diagnosis and repair.
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