CoolantClarity™ — Spot Possible Combustion Leaks and Know What to Check Next
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Get a Clear Clue Before a Cooling-System Problem Gets Worse!
That unexplained coolant issue can leave you wondering what’s really happening under the hood. CoolantClarity™ helps you check for possible combustion gases with a simple blue-to-yellow color change. Draw a sample with the manual bulb, watch the fluid, and get a useful clue in minutes—without guessing what to investigate next.

Want to See a Possible Leak Instead of Guessing?
✅ A visible color clue: The test fluid changes from blue to yellow when combustion gas is detected, helping you check for a possible head gasket or combustion-chamber leak.
✅ A straightforward sampling step: Use the manual bulb to draw headspace gases into the tester, then follow the test sequence and watch for a result in minutes.
The double-chamber design helps isolate fluid reactions. Durable acrylic, alloy, and rubber components are made for repeated diagnostic use, while universal specifications are designed to fit a range of radiator filler necks.

Make Your Next Engine Check Feel More Informed!
When you’re troubleshooting a cooling-system concern, a clear visual indicator can help you decide what to look into next. CoolantClarity™ draws headspace gases with a manual bulb, then uses a blue-to-yellow fluid change to indicate the possible presence of combustion gas. Its double chambers help separate fluid reactions, and the acrylic, alloy, and rubber components are made for repeated diagnostic use. Designed for a range of radiator filler necks, it comes with a storage bag to keep the kit together between checks.
| Us | Others | |
|---|---|---|
| Visible blue-to-yellow test result | ✅ | ❌ |
| Manual bulb for gas sampling | ✅ | ❌ |
| Double-chamber design | ✅ | ❌ |
| Storage bag included | ✅ | ❌ |
Turn a Color Change Into a Useful Next Step!
✅ Check for possible combustion gases: The blue-to-yellow change gives you a visual indication to help assess a possible leak while troubleshooting your vehicle’s cooling system.
✅ Keep sampling simple: The manual bulb draws headspace gases into the tester, so you can follow a straightforward test sequence and get an indication in minutes.
The double-chamber design helps isolate fluid reactions, and acrylic, alloy, and rubber components are made for repeated diagnostic use. CoolantClarity™ is designed for a range of radiator filler necks and includes a storage bag to keep the kit together between checks.

Questions Before Your First Test?
A: It indicates that combustion gas may be present in the cooling system, but it is not a complete diagnosis on its own. Use the result as a clue for further troubleshooting.
A: The manual bulb draws headspace gases into the tester, and the test fluid gives you a visual color cue. Follow the test sequence to check for a possible leak.
A: The tester uses acrylic, alloy, and rubber components designed for repeated diagnostic use. The included storage bag helps keep the kit together between checks.
A: It is designed to fit a range of radiator filler necks, but fit can vary by vehicle. Check your radiator filler-neck setup before testing.
A: Keep the tester together in its storage bag between checks. Follow the test-fluid instructions for handling and care.
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