ACDelco DOT 4 Hydraulic Brake & Clutch Fluid 16 oz — GM OE Formula, High Boiling Point

This ACDelco GMW DOT 4 hydraulic fluid is formulated for vehicles that require FMVSS No. 116 DOT 4, ISO 4925 Class 6 performance and meets GMW 3356 specifications. Packaged in a convenient 16-ounce bottle, it serves both brake and hydraulic clutch systems where a DOT 4 fluid is specified. The blend emphasizes a high wet and dry boiling point to reduce the risk of vapor lock under heavy braking, and its chemistry offers improved low-temperature flow characteristics for reliable pedal feel in cold starts.

How does this fluid reduce the risk of brake fade under heavy use?

The ACDelco DOT 4 formulation raises both dry and wet boiling points compared with DOT 3 fluids, helping maintain hydraulic pressure and pedal firmness during prolonged or demanding braking. Higher boiling resistance means less chance of vapor formation inside the brake lines, which preserves responsiveness when temperatures climb.

• High dry and wet boiling points to resist vapor lock
• Stable viscosity under heat to maintain consistent pedal feel
• Suitable for vehicles and driving conditions that stress brake systems

Will it protect internal parts from corrosion and wear?

Yes — this DOT 4 fluid contains additives designed to guard metal surfaces and sealing components from corrosion during normal service intervals. Regular use of the correct brake fluid helps extend the life of calipers, cylinders, and lines by minimizing rust and degradation of rubber seals.

• Corrosion inhibitors formulated for hydraulic systems
• Compatible with standard brake system metals and elastomers
• Meets GMW 3356 for material compatibility and protection

Is this fluid suitable for cold-weather starting and low-temperature performance?

ACDelco engineered this DOT 4 fluid to maintain acceptable cold viscosity, which helps ensure predictable braking and clutch engagement in lower temperatures. Lower cold viscosity improves flow at start-up, reducing drag and preserving consistent pedal feel until systems warm up.

• Formulated for good low-temperature flow characteristics
• Maintains stability across temperature extremes
• Appropriate for drivers in climates with cold starts

How do I know this is the correct fluid for my vehicle?

Check your owner’s manual or the vehicle’s service documentation for the specified FMVSS or ISO brake fluid class—this product fulfills FMVSS No. 116 DOT 4 and ISO 4925 Class 6 requirements. Use DOT 4 fluids where DOT 4 is required; mixing different DOT ratings can change boiling points and performance, so follow manufacturer recommendations.

• Meets FMVSS No. 116 DOT 4 and ISO 4925 Class 6
• Meets GMW 3356, recommended for General Motors applications
• 16 oz bottle for topping off or single-service jobs

Note about safety: this product contains chemicals listed under California Proposition 65. Handle with care, avoid prolonged skin contact, and consult local regulations for disposal instructions.

Who is this for? Mechanics, DIY enthusiasts, and fleet maintenance teams who need a reliable DOT 4 brake and clutch fluid that meets OEM specifications will benefit from ACDelco 798696. It’s suited to drivers seeking a ready-to-use 16-ounce supply for topping off reservoirs, performing brake service, or maintaining hydraulic clutch systems where DOT 4 is specified. Choose this fluid when you want a factory-compatible product that balances high-temperature boil resistance, cold-weather performance, and corrosion protection.