Bought An ITEQ Brake Fluid Tester Pen Off Amazon, Let's See If Its Any Good.

ITEQ Brake Fluid Tester Pen review and compare DOT 3 and DOT 4 longevity by testing with the pen. How long does DOT 3 last once opened?
ITEQ Brake Fluid Liquid Tester Pen: amzn.to/3pkteiI
#mazda #mx5 #miata
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[@MrMlyarber]

How often should you change the brake fluid in my miata ND2. I got 20k and two years on it now.

[@Killobyte]

The stock brake fluid is DOT 3 which I've seen people run for well over 10 years with normal driving. You are most likely going to be fine just checking the fluid when you have the brake pads replaced or every 5 years. But, it really should be flushed/replaced when the fluid gets to 3%.

[@WOLVERINE95899]

Glad you rechecked the pen tester with a multi meter. Great video.