Mechanics and DIYers, this OEMTOOLS antifreeze tester takes the guesswork out of checking your coolant protection levels! The disc-type design is accurate at all temperatures, and it shows readings in both Celsius and Fahrenheit scales so everyone can understand the results. What's really clever is the '6th disc' feature that shows overprotection and loss of cooling efficiency - something many basic testers miss. The 16 1/4-inch length gives you good reach into radiator necks, and the one-piece bulb with neoprene dip tube is durable and reliable. For servicing modern computerized vehicles, having the right diagnostic tools is crucial, and this tester delivers factory-level accuracy without the dealership price tag. It's specifically designed for ethylene glycol-based antifreeze, which is what most vehicles use. The construction feels solid in hand, and it's simple to use - just draw some coolant into the tube, check the floating discs, and you've got your protection level. Whether you're a professional mechanic maintaining customer vehicles or a car enthusiast doing your own maintenance, this tester helps prevent cooling system problems before they happen. Knowing your coolant's actual protection level can save you from expensive repairs down the road from freezing damage or overheating. OEMTOOLS is known for bringing professional-grade tools to the aftermarket, and this antifreeze tester continues that tradition with reliable performance that makes coolant testing quick, easy, and accurate every time.
Free 30-day returns 
Free 30-day returns
