Bar's Leaks®High Mileage Cooling System Repair has twice the performance of other products, by not only stopping cooling system leaks, but adding future protection. It is scientifically formulated to stop coolant leaks, thereby reducing antifreeze loss, while correcting other cooling system problems helping to prevent costly repairs and breakdowns. In addition, Cooling System Repair contains Xtreme Cool which stops overheating and reduces water temperature. Works on all vehicles and in any gasoline, turbocharged and diesel engines. Use with ALL 50-50 mix types and colors of antifreeze coolant and / or water. For most vehicles leaks stop instantly. For many vehicles, this is your last change before paying an expensive repair bill or replacing the vehicle.