Commercial Vehicle Cooling System Flush

Commercial Vehicle Cooling System Flush

W45990 · 1000ml

Cooling System Flush is a concentrated solution designed to thoroughly clean and restore the efficiency of all cooling systems. It will remove limescale deposits, corrosion, sludge, and oil deposits that have built up in the cooling system, restoring its efficiency.

  • Dual action: 1) Removes limescale deposits 2) Eliminates corrosion, sludge, and oil residues
  • Restores the optimal operation of the cooling and heating system
  • Powerful acid free radiator cleaner
  • Excellent performance in all types of cooling liquid, including OAT coolant
  • Keeps dirt and particulates in suspension whilst cleaning
  • Safe for rubber hoses, seals and all metals in the cooling system
  • Extremely effective in all closed-circuit cooling systems
Parts Effectiveness
Cooling System


Engine Petrol & Hybrid petrol, Diesel & Hybrid diesel

For all "water" cooled systems of all engines. Effective for inefficient cooling and heating systems. Effective in all coolants including OAT.

How to use

  1. Add contents to the cooling system. 1 litre treats cooling systems up to 25 litres
  2. Warm up the engine with the heater control in HOT position
  3. Let the engine run at idle for 30 minutes
  4. Stop the engine and allow to cool, then drain the system
  5. With system still open, flush with plenty of water until it runs clear
  6. Close system and refill with coolant
  7. Add Wynn's Cooling System Stop Leak as a leak preventive agent and to boost anti corrosive properties

Recommended to be used before changing cooling liquid

Additional Information

Product Code
Units per case
Packaging Languages
1000 ml