Antifreeze Coolant Tester — fast, reliable checks without batteries Why you need it Prevent engine damage from frozen or ineffective coolant by getting instant, readable results on antifreeze condition and protection level. Saves time during routine maintenance, pre-trip inspections, or fleet checks by delivering immediate, actionable measurements. Key benefits Battery-free, instant readings: traditional dial display gives a clear, intuitive result immediately — no setup time, no waiting for power. Comprehensive assessment: measures frost protection density, freezing point, and specific gravity to evaluate overall antifreeze performance. Durable construction: built from high-quality materials with a sturdy, robust structure for consistent performance through repeated use. Easy setup and use: perform a test in a few simple steps and read results quickly for fast diagnostics. Main features Functions: frost protection density test, freezing point measurement, and specific gravity/specific measurement. Readability: traditional analog dial design provides straightforward, unambiguous readings. Performance: instant measurements with reliable repeatability over prolonged use. Compatibility: suitable for standard automotive antifreeze/coolant fluids (common ethylene- and propylene-glycol based formulations). Typical applications Winter vehicle prep: confirm antifreeze provides adequate freeze protection before cold weather to avoid engine or cooling system damage. Routine maintenance or DIY checks: quickly verify coolant condition during scheduled service or home inspections. Pre-purchase or fleet inspections: assess coolant health on used vehicles or multiple fleet vehicles to identify issues early. What you can expect Quick, dependable testing without batteries or complex electronics. A robust tool designed for consistent, long-term use. Clear, actionable results that let you decide whether coolant replacement or adjustment is needed.