G12 Plus coolant compatible with VW G11, G12, G12+ & G13 OEM‑approved antifreeze—mixes easily with water Protects against corrosion with correct mix ratio G12+ Engine Coolant Antifreeze is a modern, long‑life coolant compatible with all previous Volkswagen Group and Porsche coolant specifications, including G11, G12, G12+, and G13, as well as a wide range of other vehicles. Designed to meet OEM approval standards, it offers excellent thermal stability and long‑term protection for today’s engine cooling systems. This coolant must be mixed with water; when diluted to the correct ratio, it provides effective corrosion protection for aluminium and other engine metals.