Prestone Products Corporation, a leader in the development of under-the-hood chemicals, aims to keep your vehicle in top performance as we head into the winter months with its antifreeze/coolant with patented Prestone Cor-Guard corrosion inhibitors.

As cars have changed significantly over the years, Prestone has developed and updated its formula to keep up with evolving technologies and is the most advanced antifreeze/coolant technology on the market – most competitor’s AF/C technology is over two decades old. Prestone AF/C with patented Cor-Guard® corrosion inhibitors provides superior protection against the development of corrosion in your cooling system – five times better than the next leading brand. Prestone AF/C also provides instant protection against corrosion, while most competitive AF/C technology takes thousands of miles to begin working. And Prestone AF/C still provides protection against weather extremes, from freezing -34F to boiling over to +265F.

prestone cor-guard, fuel curve

Formulated for both new and old radiators and water pumps, either protecting them against the initial effects of corrosion or helping to prevent any further damaging effects from corrosion, Prestone with patented Cor-Guard® corrosion inhibitors keeps cooling systems running more effectively and helps maintain your engine’s optimum performance over the lifetime of your vehicle.

prestone cor-guard, fuel curve

Prestone with patented Cor-Guard® corrosion inhibitors helps reduce the risk of breakdowns, and keeps engines free from the damaging effects of worn-out antifreeze. Prestone offers a unique solution to this issue through this patented technology, preventing corrosion from affecting water pumps, radiators, and hoses better than the next leading brand.

Prestone with patented Cor-Guard® corrosion inhibitors is the result of over seven years of research, development and testing at Prestone’s renowned Technology Center.

prestone cor-guard, fuel curve

Prestone with patented Cor-Guard corrosion inhibitors is available in two products. Prestone Concentrate Antifreeze/Coolant is ideal for filling radiators after a thorough flush and clean. Alternatively, Prestone 50/50 Prediluted Antifreeze/Coolant is a quick and convenient way to top off a car’s cooling system with the superiority of patented Cor-Guard® corrosion inhibitors. It can be added to any existing fluid to optimize the cooling system’s performance.

For more information, or to locate a retailer to purchase Prestone, please visit For a demonstration of any Prestone product, visit the Prestone YouTube channel.