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Liqui Moly 1804 Radiator Cleaner Flush - 300ml

Liqui Moly 1804 Radiator Cleaner Flush - 300ml

Regular price £6.15
Regular price Sale price £6.15
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Average Time To Dispatch: 1 Hour 15 Minutes*

Brand: Liqui Moly
Liqui Moly Part Number: 1804
Size: 300ml
Price Per 100ml: £2.05

Deposits in the cooling/heating system create blockages for heat exchange and they also block thermostat valves and control mechanisms. When engine temperatures are too high, the engine runs uneconomically and suffers excessive wear at considerable risk of damage. Radiator Cleaner removes deposits containing oil and lime and ensures that the engine runs reliably and at the optimum temperature. Does not contain aggressive acids or alkalis.

For all coolant and heating systems in water-cooled engines. 300 ml is sufficient for 10 l of coolant (dosage 1:33). Compatible with all conventional coolant additives and antifreezes (with the exception of “low conductivity” coolants).


  • Disperses sludge
  • Does not contain acids or alkali
  • Removes oil and greasy residue
  • Chemical conversion of lime
  • Neutralizes acids
  • Neutral behaviour on rubber and plastics
  • Compatible with antifreeze

Areas of application
For all coolant circuits in water-cooled engines (with
the exception of “low conductivity” coolants).


Add contents to the cooling water. Then start up the heater and, depending on the level of contamination, let the engine run at operating temperature for 10 – 30 min. After finishing cleaning, drain the coolant/cleaner mixture, thoroughly flush the cooling system with water and refill it according to the manufacturer’s instructions. The content (300 ml) is sufficient for 10 l of coolant (dosage 1:33).


Technical data
Form - liquid
Colour / appearance -white, light unclear
Hazard class as per German VbF - none
pH value - ~8,7
Solubility in water - Soluble
Odor - Characteristic
Density at 20 °C - 1,015 g/cm³

Data Sheet: TDS Download
Safety Sheet: MSDS Download

*Average time to dispatch new orders during business hours (Monday to Friday 9am-5pm) over rolling 30 day period.

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Delivery Information

Standard Next Day Delivery - £5.99 (Mainland UK only)
FREE Standard Delivery on all orders over £75 (Mainland UK only)
Orders made before 2pm are usually sent next day but can take up to 72 hours.

*At this time we do not offer international shipping

30 Day Returns

30 day returns policy – You may return an item within 30 days at your own expense unless the item received is wrong or damaged.