Good idea to buy a refractometer (cheap on eBay) to measure coolant freezing temp. I was surprised to find the factory coolant protected to -40°C so following rad change put the fresh Mannol AF12+ coolant in neat as recommended, to give same.


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone