Brake Fluid Tester

[TiAgX5]

No way a test strip dipped into the master cyl reservoir is showing condition of brake fluid in the calipers.

Any moisture in the system will collect at the lowest point (calipers/lines), because of the different specific gravity between brake fluid and water.

An incomplete flush can leave old "wet" fluid in the ABS module/lines/calipers and the test strip will ONLY verify the dry/new fluid on top.

Moisture test strips only work to verify fluid moisture in a system that circulates the fluid, automotive hydraulic brake systems compress the fluid, ZERO circulation.

[StephenVA]

Originally Posted by TiAgX5

No way a test strip dipped into the master cyl reservoir is showing condition of brake fluid in the calipers.

Any moisture in the system will collect at the lowest point (calipers/lines), because of the different specific gravity between brake fluid and water.

An incomplete flush can leave old "wet" fluid in the ABS module/lines/calipers and the test strip will ONLY verify the dry/new fluid on top.

Moisture test strips only work to verify fluid moisture in a system that circulates the fluid, automotive hydraulic brake systems compress the fluid, ZERO circulation.

+1
This is one tool that is a waste of time, unless you are trying to sell services. When in doubt Flush.