Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISMAINTENANCEFLUIDSBRAKE FLUIDSERVICE PRECAUTIONS
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Brake Fluid: Service Precautions
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Service Precautions
WARNING: Brake fluid is poisonous.
^ It must NEVER be removed by siphoning with your mouth.
^ If brake fluid contacts skin or eyes, flush or wash adequately to prevent irritation. Get medical attention immediately if necessary.
^ Brake fluid must be disposed of properly.
CAUTION:
^ Use only fresh brake fluid conforming to US standard FMVSS 116 DOT 4. Genuine VW/Audi brake fluid conforms to this specification.
^ Brake fluid must never be brought into contact with liquids containing mineral oil (gasoline, cleaning agents). Mineral oils damage the stoppers and cups in the braking system.
^ Brake fluid must not be allowed to come into contact with paintwork because of its caustic effect.
^ Brake fluid is hygroscopic (i.e. it absorbs moisture from the surrounding air) and should therefore always be kept in airtight containers.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.