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Feature

Green LED, H2O level is <1.5% = OK
Yellow LED, H2O level is 1.5 to 3% =Replace soon
Red Led, H2O level is >3% Replace Immediately
Bright Led Flashlight
Auto-off function; One AAA battery operation- not included

Description

It is necessary to check the moisture content of your brake fluid because it readily absorbs moisture. Over a period of time moisture will cause brake fluid to degrade. Once brake fluid reaches a certain level the brake fluid is no longer able to function properly in the brake hydraulic systems. This Schwaben Brake fluid tester has a green, yellow and red light that represents moisture content of DOT 4 brake fluid to determine if service is needed.