FLOW FLUSH™ Clean • Restore • Protect FLOW FLUSH™ is a professional-grade coolant system cleaner designed to remove rust, scale, and deposits that restrict coolant flow and reduce efficiency. Its powerful formula restores optimal circulation throughout your engine's cooling system, preventing overheating and ensuring your engine runs cooler, cleaner, and more efficiently. Over time, coolant systems accumulate corrosion, rust, and sediment buildup that block heater cores, radiators, and water passages. FLOW FLUSH™ breaks down and dissolves these deposits safely, preparing your system for fresh coolant and long-term protection. Use it before adding sealants or protectants like Gasket Guard® for maximum performance and longevity. Compatible with all engine metals, seals, and coolant types, FLOW FLUSH™ is suitable for both petrol and diesel engines, ensuring a deep clean without harming critical components. How to Use FLOW FLUSH™ Ensure the engine is cold and the system is drained enough to add FLOW FLUSH™ directly into the radiator or expansion tank. Refill with clean water and run the engine for 15–20 minutes or drive up to 10 miles to circulate the cleaner through the system. Allow the engine to cool completely, then drain the system thoroughly. Rinse with clean water until it runs clear, then refill with fresh coolant or continue with your next treatment (e.g. Gasket Guard®). Product Details & Dosage Bottle Size: 500ML Recommended Dosage: Up to 3L cooling systems: 1 bottle 3L to 6L systems: 2 bottles Heavy-duty systems: 3 bottles For best results: Use FLOW FLUSH™ every 12 months or before adding any sealant or new coolant for maximum performance. 🌿 The Eco-Friendly Choice A clean cooling system is a longer-lasting engine. By using FLOW FLUSH™ to restore your system rather than replacing components, you're making a greener choice for your vehicle and the planet. Extends engine and radiator life — removing deposits prevents premature failure, reducing the need for part replacements Avoids unnecessary component disposal — a clean system means fewer blocked radiators and heater cores being scrapped Compatible with all coolant types — no special disposal requirements, no hazardous byproducts introduced Reduces overheating risk — preventing overheating avoids the cascade of engine damage that leads to costly, wasteful rebuilds Learn more about our environmental impact on our Sustainability page. Restore your cooling system's performance.Trust FLOW FLUSH™ to clean, restore, and protect your engine's vital cooling pathways.
