Granville Universal coolant and Sub-Zero Blue Antifreeze is a Monoethylene Glycol based antifreeze that does not contain nitrates,amines or phosphates. This should be used all year long to prevent corrosion and blocking of waterways within your engine and cooling system. Sub-Zero Blue Antifreeze contains corrosion inhibitors suitable for aluminium engines and is suitable for use in petrol and diesel engines. Available in 2L or 5L . Features: 2 year protection Antifreeze & Summer Coolant Suitable for all engines including aluminium Dosage Information Freezing Point Protection: -8°C @ 25% concentration by volume -17°C @ 33% concentration by volume -38°C @ 50% concentration by volume