Prestone AF-1420 Antifreeze/Coolant Tester Review

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As a car owner, ensuring the proper maintenance of your vehicle’s cooling system is crucial. The Prestone AF-1420 Antifreeze/Coolant Tester is a handy tool designed to help you easily test for anti-freeze/anti-boil protection, allowing visual inspection for rust and sediment. This review will provide valuable insights into the product’s features, benefits, and potential drawbacks based on existing customer feedback.

Features and Benefits

The Prestone AF-1420 Antifreeze/Coolant Tester provides a quick and easy method to safely collect a sample and measure coolant concentration. It assists in ensuring good corrosion protection, preventing freeze-ups and boil-overs, and fits universally, making it suitable for various vehicle types.

Customers have praised the tool for its accuracy, ease of use, and clear markings. Many found it to be a valuable addition to their tool collection, providing peace of mind when checking coolant levels. The tool’s affordability and the potential cost savings it offers by allowing users to verify the need for coolant replacement have been highlighted as significant benefits.


  • Accurate and easy to use
  • Clear markings for easy reading
  • Affordable and cost-effective
  • Provides peace of mind regarding coolant levels
  • Universal fit for various vehicle types


  • Some users wished for a longer hose
  • One user reported a durability issue if not rinsed after use

Final Verdict

The Prestone AF-1420 Antifreeze/Coolant Tester is a valuable tool for car owners, offering a cost-effective way to ensure the proper maintenance of their vehicle’s cooling system. While some minor drawbacks have been noted, the overall consensus from customers is positive, with the tool being praised for its accuracy, ease of use, and potential cost savings. Whether you’re a DIY enthusiast or want to verify a shop’s recommendations, this tester provides peace of mind and helps prevent potential cooling system issues.

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