Keep your vehicles cooling system in perfect order with Penrite 10 Tenths Race Coolant Inhibitor Concentrate. The race proven corrosion inhibitor features hybrid organic acid technology (HOAT), lowering coolant temperatures and offers long term protection for up to 3-5 years or 150 000km, whichever comes first. Penrite 10 Tenths RCI is designed to provide better heat dissipation by preventing cavitation, decreasing operating temperatures and protecting your engine. It is compatible with all rubber hoses, seals and gaskets and will provide protection to all metals such as aluminium, brass and copper. The non-glycol based coolant wont cause slippery road surfaces if it happens to spill, ideal for use on track where glycol coolants arent permitted. Penrite 10 Tenths RCI is concentrated, for best results mix 50-100ml per 1 Litre of demineralised water, making up to 20L of coolant. To find the correct coolant suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.