Brake Fluid 101: DOT 3, DOT 4, Moisture & More
In this next issue, we talk about brake fluid. I was looking forward to making this one. It is a really important one. Brake fluid might be out of sight, but it should never be out of mind. In this video, we explain what brake fluid is, what it does, and why neglecting it can lead to dangerous brake failure. Most drivers don’t realize brake fluid is hygroscopic—it absorbs moisture, and over time, that can corrode your brake system from the inside out.
🚘 Here’s what you’ll learn:
What brake fluid is and how it works
Signs of bad or contaminated brake fluid DOT 3 vs DOT 4 vs DOT 5.1 – what’s the difference?
Why moisture in brake fluid is dangerous
How often to flush brake fluid (OEM recommendations vs reality)
ABS, traction control, and stability systems and their reliance on good fluid
How dirty brake fluid damages calipers, master cylinders, and more
Why brake pedal feel can be affected
This is essential maintenance for Subaru, Toyota, Honda, Ford, GM, and other vehicles with ABS and modern braking systems. Whether you’re a DIYer or just trying to protect your investment, this video helps you stay safe.
🧪 Don’t skip this—your brakes literally depend on it.
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