Phoenix Systems brake and coolant test strips — 15-pack double-ended, rapid 60–90s checks

Phoenix Systems 15-pack double-ended test strips let you check brake fluid corrosion and coolant pH/glycol levels in about 60–90 seconds without special tools.

Keep control over two critical vehicle fluids with a single, easy-to-use tool. These double-ended strips provide separate pads for brake fluid corrosion detection and coolant pH/glycol concentration, so you can verify whether fluids still protect braking and cooling systems or need service. Each strip is individually foil-wrapped for shelf life and hygiene, and the kit contains 15 tests — enough for routine checks or multiple vehicles.

How do these strips reveal brake fluid condition?

One end of each strip reacts to corrosive byproducts in brake fluid, changing color in direct proportion to contamination. Dip the brake-fluid end into the master cylinder reservoir (with the cap removed) and read the color change after about a minute to assess corrosion risk. High corrosion signals the fluid’s protective additives are spent and a service is likely needed.

• Dip brake end into master cylinder fluid (with cap removed when cool)
• Wait 60–90 seconds for the corrosion-sensitive pad to change color
• Compare the pad to the included reference to evaluate corrosion level
• Use results to decide on fluid change and possible anti-corrosion treatment

What do the coolant pads measure and why it matters?

The coolant end has two indicator pads: one that responds to glycol concentration and another for pH (acidity/alkalinity). Glycol level affects freeze/boil protection and corrosion resistance; pH shows whether the coolant is acidic, which accelerates corrosion. Testing the coolant as it sits in the system (typically diluted ~50/50) gives an immediate picture of cooling-system health.

• Dip coolant end into the radiator or reservoir only when cool; do not open a hot system
• Glycol pad color range indicates percentage of antifreeze present
• pH pad color shows if the coolant is acidic (below neutral) or alkaline
• Low glycol or acidic pH suggests service to prevent pump, heater core, or radiator damage

How easy and reliable are the test results for DIY checks?

These strips are designed for straightforward on-vehicle testing with a clear color response in under two minutes. Each strip is factory sealed to preserve accuracy; results are repeatable when you follow the instructions and compare the pads to the color guide. They eliminate guesswork and help you avoid unnecessary services or missed maintenance.

• Individually foil-wrapped strips for long shelf life and accurate readings
• Simple dip-and-wait procedure — no tools or lab equipment needed
• Rapid 60–90 second reaction time for both brake and coolant pads
• Recommended routine checks help schedule maintenance before failures occur

Who is this for: DIY mechanics, fleet managers, and car owners who want a quick, economical way to check two vital fluids without relying solely on shop diagnostics. This 15-pack is suited for periodic maintenance, multi-vehicle use, or keeping in a shop bay. It’s also helpful for verifying a shop’s recommendation before approving fluid changes.

Usage notes and safety: Always test brake fluid at the master cylinder with the vehicle cool and clean the reservoir area before opening. Do not remove the radiator cap when the engine is hot; test coolant only in the system’s diluted state (typically 50/50). Follow local disposal rules for used strips and contaminated fluids.

Kit contents and compatibility: Fifteen double-ended, corrosion- and pH/glycol-sensitive test strips, individually foil-packed. Suitable for conventional DOT brake fluids and common ethylene- or propylene-glycol based antifreeze blends. For manufacturer-specific service intervals, consult your vehicle’s handbook.