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Castrol - Radicool, Coolant/Antifreeze - 20 Litre
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BG Universal Cooling System Cleaner - 354ml - 540E
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Fortron FCF Cooling System Flush, 325 ml - Pack of 30
Total Price: £461.09 ADD ALL three TO CART
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Technical Specification
PRODUCT NUMBER 550063141PRD0000455326332010322633201052
Type Antifreeze ConcentrateEthylene glycol based engine coolant concentrateCoolant
Density, 15°C 1.0691.1251.125
Equilibrium Boiling Point 171171
Freezing point (50 vol %) -37-36-36
Colour PinkBlue-GreenGreen-blueGreen-blue
Volume 202020208
Oil Type Organic Additive Technology Pre-diluted Coolant/ AntifreezeHybrid Organic Additive Technology CoolantEthylene GlycolEthylene glycol based engine coolant concentrate
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Q 1. What applications is Castrol Radicool designed for?

A. Castrol Radicool is for engine cooling-system service in petrol and diesel engines with aluminium or cast-iron components — general automotive and light-commercial cooling-system service.

Q 2. Is Castrol Radicool a concentrate or pre-mixed?

A. Castrol Radicool is supplied as a concentrate and is mixed with water at the dilution ratio specified by the engine manufacturer.

Q 3. What performance specification does Castrol Radicool meet?

A. Castrol Radicool meets BS 6580:2010 (UK coolant specification).

Q 4. What ASTM tests is Castrol Radicool measured against?

A. Castrol Radicool is tested to ASTM D3306; ASTM D1287; ASTM D1120; and ASTM D1177.

Q 5. What is the difference between Castrol Radicool and Radicool NF?

A. Both are Castrol Radicool antifreeze coolant concentrates. Radicool (this product) is the mainstream concentrated coolant meeting BS 6580. Radicool NF is the Nitrite-Free G11-class silicate hybrid coolant with VW TL 774C and MAN M324 NF approvals for commercial-vehicle and Volkswagen-group service.

Q 6. What is a BS 6580 / ASTM D3306 classification?

A. BS 6580 (UK) and ASTM D3306 (US) are the universal coolant performance standards every reputable coolant meets. They are your baseline check — match the standard your handbook specifies and the coolant is technically suitable for your system. Every coolant on our site lists its BS 6580 and ASTM D3306 classifications.

Q 7. What is an OEM Specification?

A. An OEM Specification is the coolant requirement set by a vehicle or equipment manufacturer (e.g., MB 325.3, VW TL 774-D / G12+). When a coolant lists the code, the coolant manufacturer has developed and tested it to meet the criteria the equipment manufacturer requires. Match the code in your handbook and you have a coolant engineered for your machine.

Q 8. What is an OEM Approval?

A. An OEM Approval means the coolant has been formally tested and signed off by the equipment manufacturer and listed on their official approved-products register (e.g., MB-Approval 325.3). An Approval confirms the coolant is recognised by the equipment manufacturer for service use in their machines.

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