Quenching Fluids

Castrol Iloquench 1


Castrol Iloquench 1 General Purpose Cold Quenching Oil


Castrol Iloquench 1 is a general-purpose, low-viscosity quenching oil. It is based on selected solvent refined mineral oil highly resistant to oxidation and therefore offers long service life with minimum deterioration of properties during service.


Iloquench 1 is a universal quenching oil for use in cold quenching applications of medium to high carbon as well as low alloy steels to impart the desired hardness to the components without metallurgical distortion or stress.

Iloquench 1 is suitable for use in continuous furnaces, sealed quench furnaces and open quench tanks. It may also be employed for quenching parts heated in cyanide salt baths. Due to the low Sulphur content, Iloquench 1 is not affected adversely by the carry-over of cyanide salts.

Iloquench 1 is particularly suitable for the quenching of small components because its low viscosity enables the surfaces of small, intricate profiles to be wetted effectively, enabling the most efficient heat transfer. Its low viscosity also reduces drag-out losses to a minimum. Typical treated parts used to be nuts, bolts, ball bearings, hand tools and springs.


Castrol Iloquench 1 General Purpose Cold Quenching Oil Advantages:

  • Inherently resistant to oxidation and thermal degradation leading to a longer service life.
  • Consistent quenching performance and metallurgical standards of output.
  • Provides clean surfaces, free of stains, patches, spots and marbling aspects.
  • Low viscosity ensures minimum drag-out losses and helps to ensure the most effective heat transfer.
  • Versatile – compatible with all methods of component heating, including salt bath heating.
  • Easy to clean off by using alkaline process cleaner, also available from Castrol.
Viscosity20 mm/s² at 40°C
Metal typeHigh alloy steel / Stainless steel, Low / Med alloy steel
Product typeSurface Treatments
Applicable to these sectorsAutomotive Manufacture, Machinery, Metal Goods, Metals

Conditions of Use:

Temperature of use open to atmosphere: 30 – 80 °C
Temperature of use under a controlled atmosphere (inert gas): 50 – 100 °C


Rolls Royce CSS 153


To avoid product deterioration always keep the container/drum tightly sealed. Store the product in a cool, dry place away from direct sunlight.   Prevent exposure to frost and avoid water ingress. For optimum product stability, it is preferable to store the product indoors between 5°C and 45 °C / 41°F and 113°F.
For more details, please refer to the product safety data sheet.

Contact Us

Technical Data Sheet

Safety Data Sheet


Castrol Iloquench metalwork quenching fluid

Request a quote for this product