Prestone Professional Coolant/Antifreeze is our flagship coolant product, delivering outstanding protection and durability for all cars and engines. Produced in-house by our expert development team, Prestone Professional Coolant/Antifreeze is an industry-leading coolant that is trusted by professionals and individuals alike for its advanced formula and unmatched performance. Offering superior protection for up to 300,000 miles, our Professional Coolant/Antifreeze is frequently used by car manufacturers as a first-fill product. And with a brand-new formula complete with 17 new technology patents, outstanding performance, protection, and durability are guaranteed.