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Anyone with extensive aluminium alloy mods, such as the waterpump body, would do best to use a specific aluminium antifreeze.

But rear this FAQ page from Opie Oils: https://www.opieoils.co.uk/pdfs/tech-articles/coolant-antifreeze.pdf



Interesting bit about colour. I haven't seen any IAT antifreeze that isn't blue / green in more than 20 years, and I've never seen any OAT stuff that isn't red, orange or purple.

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