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Brake Fluid Flush for my 2020 G70 3.3T - DIY or Dealer?

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Chris P. · rep 0 · May 22, 6:22 AM · 1 replies · solved · Question

Vehicle: 2020 Genesis G70 3.3T

Hey everyone,

I've got a 2020 Genesis G70 3.3T and I'm approaching the 3-year mark. I've been thinking about getting the brake fluid flushed, but I'm not sure if this is something I can tackle myself or if it's better left to the dealership.

What's the recommended interval for a brake fluid flush on these cars? Also, what type of brake fluid should I be using? I've heard different things about DOT 3 vs DOT 4.

Has anyone here done a DIY brake fluid flush on their G70? Any tips or special tools needed? I'm pretty handy, but I want to make sure I don't mess up something critical like the brakes. Thanks for any advice!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 6:22 AM

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ClearTheCode admin answer:

A brake fluid flush is a crucial maintenance item for your 2020 Genesis G70 3.3T, ensuring optimal braking performance and longevity of your braking system components.

  1. Recommended Interval: For most Genesis models, including your 2020 G70, the manufacturer recommends a brake fluid flush every 2 years or 30,000 miles, whichever comes first. This interval is critical because brake fluid is hygroscopic, meaning it absorbs moisture from the air over time.
  2. Type of Fluid: Your 2020 Genesis G70 3.3T requires DOT 4 brake fluid. Always check your owner's manual or the cap on your brake fluid reservoir to confirm, but DOT 4 is standard for modern performance vehicles like yours due to its higher boiling point.
  3. Causes of Degradation: The primary cause of brake fluid degradation is moisture absorption. As water accumulates, it lowers the fluid's boiling point. Under heavy braking, the fluid can boil, creating vapor bubbles in the lines. Since vapor is compressible, this leads to a spongy brake pedal feel and significantly reduced braking effectiveness, a dangerous condition known as 'brake fade'. Moisture also promotes corrosion within the brake lines, calipers, and ABS module.
  4. DIY vs. Professional Service:
    • DIY: A brake fluid flush can be a DIY job if you have the right tools and experience. You'll typically need a pressure bleeder or a vacuum pump, a catch bottle, and a helper if using the traditional two-person pump-and-hold method. It's essential to prevent air from entering the system, which can be challenging.
    • Professional Service: For many, especially those new to brake system work, having it done by a qualified technician is recommended. Dealerships and independent shops have specialized equipment (like diagnostic tools to cycle the ABS pump if needed) and expertise to perform the flush correctly and safely.
  5. When to See a Shop:
    • If you are unsure about the process or lack the proper tools.
    • If your brake fluid appears very dark, cloudy, or sludgy, indicating significant contamination.
    • If you notice a spongy brake pedal or reduced braking performance even after a DIY attempt, which could mean air is in the system.
    • If you suspect any leaks in your brake system.

Regular brake fluid flushes will maintain your G70's braking system integrity and keep you safe on the road.

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