OTC 3890 Brake Fluid Safety Meter

SKU: OTC3890
UPC: 731413036675
Shipping: Calculated at Checkout

OTC 3890 Brake Fluid Safety Meter

Check condition of brake fluid in less than a minute!

Water can enter a brake system though microscopic holes anywhere in system components... it can vaporize under the high heat conditions of hard braking situations... it can cause dangerous degradation of your customer's ability to stop safely! The No. 3890 can diagnose a brake system in under a minute. It actually boils a small sample of brake fluid in the reservoir to test for water contamination.


Powered by the vehicle battery; won't operate if connected to the wrong polarity
On-screen prompts lead you quickly through testing
You'll find the minimum boiling (vaporizing point) along with minimum recommended levels for various types of brake fluid
Works on DOT 3, DOT 4, and DOT 5.1 fluids
No consumable test strips — test every vehicle that comes into your shop
No. 3890 – Brake fluid safety meter. Wt., 2 lbs., 8 oz.

Title of the document

OTC Warranty