A high performance long life coolant with Organic Acid Technology (OAT) that is suitable for use in the cooling systems of all types of automotive petrol or diesel vehicles.

Castrol Radicool SF-O is a silicate free concentrate antifreeze, formulated using advanced organic acid technology (OAT).
Castrol Radicool SF-O works over a wide operating temperature range for effective engine cooling in all  climates.
Castrol Radicool SF-O should be diluted with deionised water to between 33% and 50% concentration.
For optimum performance it is recommended that a 50% mixture in water is used. To give freezing  protection from -18°C to -36°C.

Applications:

• Castrol Radicool SF-O is a long-life coolant based on monoethyleneglycol. It is suitable for use in a wide range of vehicles, including cars, trucks and buses, for both petrol and diesel engines. In contrast to  traditional antifreeze coolants, Castrol Radicool SF-O does not contain Amines, Nitrites, Phosphates, 
• Silicates or other inorganic inhibitors.
• For maximum performance Castrol Radicool SF-O should not be mixed with other coolants. It is therefore recommended that cooling systems should be drained and flushed before re-filling with  diluted Castrol Radicool SF-O.

Advantages
The special inhibitor package used in Castrol Radicool SF-O enables longer drain intervals with optimal  protection against corrosion, cooling system blockage, overheating and freezing.
Other benefits are:

• Longer operational life by allowing extended drain intervals of 3 years plus
• Longer life means reduced costs and less possibility of harm to the environment
• Outstanding corrosion protection and cooling performance in engines employing cast iron and / or aluminium
• Systems with aluminium and / or copper alloys.
• The additive technology in the product prevents build-up of calcium deposits from top up with  hard water.
• Its formulation is based on monoethylene glycol combined with special OAT inhibitor additive  technology.
• Protection against cavitation corrosion and rust.
• Effective lubrication of water pump
• Castrol Radicool SF-O is suitable for use in mixed fleets.