ACDelco DOT 4 Hydraulic Brake & Clutch Fluid, 16 oz — GM OE 798696, High‑Boiling Corrosion Protection

ACDelco DOT 4 Hydraulic Brake and Clutch Fluid is a GM original-equipment formula that delivers DOT 4 performance for braking and clutch hydraulics in passenger vehicles.

This 16 oz bottle of ACDelco 798696 (GM OE 10-4086) DOT 4 fluid is formulated to meet FMVSS No. 116 DOT 4 and ISO 4925 Class 6 specifications, including GMW 3356 requirements. It’s designed for systems that demand higher boiling points and reliable low-temperature viscosity to maintain consistent hydraulic response across a wide range of driving conditions. The fluid helps protect internal components from corrosion under normal use when used in applications calling for DOT 4 performance.

How does this DOT 4 fluid protect brakes and clutches under heavy use?

ACDelco DOT 4 fluid is engineered with a higher dry and wet boiling point than DOT 3 fluids, reducing the risk of vapor lock and fade during repeated brake applications or towing. Its formulation also includes corrosion inhibitors to help preserve master cylinders, calipers and clutch slave cylinders.

• Higher boiling point minimizes vapor formation during intense braking
• Corrosion protection extends service life of internal hydraulic parts
• Compatible with systems specifying DOT 4 / ISO 4925 Class 6

Will this fluid work in cold-weather conditions?

Yes—this DOT 4 grade maintains stable low-temperature viscosity to ensure predictable pedal feel and quick hydraulic response in colder climates. That low-temperature stability helps prevent sluggish system performance at startup and improves safety in winter driving.

• Formulated for reliable flow at low temperatures
• Maintains pumping and return characteristics for consistent pedal feel
• Suitable for vehicles that require lower cold viscosities

Is ACDelco DOT 4 fluid compatible with my vehicle’s brake system?

If your vehicle manufacturer specifies DOT 4 (FMVSS 116 DOT 4 / ISO 4925 Class 6 or GMW 3356), this fluid is a direct match and safe to use. Always check the owner’s manual or fluid reservoir cap for the recommended DOT specification before topping off or flushing the system.

• Meets DOT 4 performance level and GMW 3356 standards
• Can be used in systems calling for DOT 4 brake/clutch fluids
• Not for use where DOT 5 silicone fluids are specified

How should I store and handle this hydraulic fluid?

Keep the bottle tightly sealed and store in a cool, dry place away from direct sunlight and heat sources. Brake fluid is hygroscopic (absorbs moisture from air), so avoid leaving the container open and use fresh fluid for best performance; contaminated fluid can lower boiling point and increase corrosion risk.

• Store sealed to prevent moisture absorption
• Use fresh fluid when flushing or refilling hydraulic systems
• Dispose of used fluid according to local hazardous-waste regulations

Who is this for: Technicians, DIY enthusiasts and fleet managers who need a GM original-equipment DOT 4 hydraulic fluid for brake and clutch systems will find ACDelco 798696 appropriate. It's intended for vehicles and equipment that require DOT 4 performance and GMW 3356 compliance; confirm your vehicle’s specified fluid type before use. Note: contains chemicals listed under California Proposition 65—review safety guidance if concerned about exposure.