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Castrol Radicool NF

VISCOSITY - Maintenance & Repair

Castrol Radicool NF Antifreeze Coolant


Castrol Radicool NF is an antifreeze concentrate formulated using monoethylene glycol and selected additives, free from nitrite, amine and phosphate inhibitors. It uses hybrid technology for the modern performance engines of cars and trucks.

This coolant should be used at concentrations of between 33 % and 50% dilution with purified water to give optimum corrosion protection and freezing protection between -18°C and -36°C.


Castrol Radicool NF has been developed to meet the growing demand from engine and vehicle manufacturers for a higher performance coolant that minimises environmental impact. It provides excellent protection against corrosion, and because it contains no phosphate, the problems of deposits in some modern performance engines are eliminated.

In addition to providing excellent corrosion and low-temperature protection, the use of the recommended level of anti-freeze will significantly reduce the likelihood of wet cylinder liner pitting due to ” cavitation erosion”. Cavitation erosion is caused by the implosion of air bubbles present in the coolant, which are attracted to the liner’s outer surface. These bubbles implode, resulting in the removal of minute amounts of liner material – this, if allowed to continue unchecked, will result in liner porosity and severe engine damage.


Castrol Radicool NF Antifreeze Coolant Advantages:

  • Protects for up to 3 years
  • Excellent low-temperature protection
  • Provides excellent protection against corrosion
  • Efficient lubrication of water pumps
  • Compatible with conventional seal and hose materials used in engine cooling systems
  • Contains a bittering agent.
  • Has many OEM approvals

In the majority of cases, coolants are not compatible and should not be mixed with other coolants unless directed by the equipment manufacturer. If using Castrol Radicool NF for the first time, ensure that the cooling system has been adequately flushed with clean water.


Density @ 20C, Relative: 1.122 g/ml

Water: 3.5 % wt

Boiling Point of Engine Coolants: 174 °C

Reserve Alkalinity: 15 ml 0.1N HCl

Appearance Visual: Blue/green

pH, Engine Coolants / Antirusts: 7.3


ASTM D3306, ASTM D4985

BS – BS6580:2010


MAN 324 Typ NF

MB-Approval 325.0

MTU MTL 5048

VW TL-774C (G11)

Deutz – DQC CA-14



Castrol Radicool NF shall be stored in air-tight containers at a maximum tempertaure of 30°C. In warm climates, containers should not be stored outside in direct sunlight. It can be stored in mild steel lacquer-lined containers. Galvanised containers and handling equipment should not be used.

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Castrol Radicool NF Engine Radiator Coolant

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