Dealing with a pesky radiator leak? This Prestone AS145 stop leak is like magic in a bottle! That patented formula gets to work fast, sealing leaks in your radiator, water pump, and heater cores. What's really cool is it doesn't just patch the problem - it actually boosts corrosion inhibitors to protect against the pitting and corrosion that cause leaks in the first place. The secret's in those fibrous particles (same stuff they use in bulletproof vests, no joke!) that can seal leaks up to 0.020 inches by 0.5 inches. But don't worry about clogging - the particles are sized perfectly to seal leaks without blocking flow through your radiator tubes. Just pour it in and let it circulate - it'll find those leaks and seal them up while protecting your entire cooling system from future corrosion issues. Perfect for emergency repairs when you notice a small leak and need a quick fix to get you to the mechanic, or as preventative maintenance for older vehicles. The 11 oz bottle treats most standard cooling systems, and it works with all types of antifreeze/coolant. Seriously, this stuff has saved so many people from expensive radiator replacements - it's definitely worth trying before you shell out big bucks for repairs!
Free 30-day returns 
Free 30-day returns
