Granville Sub-Zero blue antifreeze is a monoethylene glycol based antifreeze that does not contain nitrates, amines or phosphates. Granville Sub-Zero blue antifreeze is a monoethylene glycol based antifreeze that does not contain nitrates, amines or phosphates. Sub -Zero blue contains corrosion inhibitors suitable for aluminium engines and is suitable for use in petrol and diesel engines.
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