Johnsen's Silicone DOT 5 Brake Fluid 6-Pack — 12 oz Cans, Non‑Hygroscopic High-Temp Protection

Johnsen's 7012-6-6PK Silicone DOT-5 Brake Fluid is a silicone-based hydraulic brake fluid sold as six 12‑ounce cans that resists moisture uptake and offers high-temperature protection for drum and disc brakes (not for ABS systems).

This silicone DOT 5 formula is designed for vehicles where a non-hygroscopic fluid is preferred. Unlike glycol-based DOT 3 and DOT 4 fluids that absorb water over time, silicone DOT 5 stays largely moisture-resistant, helping maintain brake performance and reduce corrosion risk inside systems not specified for ABS. Each pack contains six conveniently sized 12-ounce cans for service shops, restoration projects, or multi-vehicle maintenance.

How does this silicone fluid differ from DOT 3 and DOT 4?

Silicone DOT 5 uses a silicone base rather than glycols, which results in markedly lower water absorption and different chemical behavior in brake systems. That makes it a common choice for classic cars and systems where moisture avoidance is important, though it isn't compatible with all modern systems.

• Essentially non-hygroscopic—absorbs very little water compared to DOT 3/4.
• Different compressibility and seals compatibility—check manufacturer guidance before switching.
• Suitable for drum and disc brakes that accept silicone fluids.

What performance and temperature protection can I expect?

This product is rated for high-heat conditions common in braking applications and is formulated to protect against vapor lock and fade at elevated temperatures. It delivers stable performance under heavy braking and heat build-up without the rapid boil characteristics of inferior fluids.

• High-temperature protection—formulated to withstand extreme brake temperatures.
• Helps reduce vapor formation that can cause brake fade.
• Stable viscosity across typical operating ranges for consistent pedal feel.

Can I use Johnsen's DOT 5 in ABS-equipped vehicles or mix it with other fluids?

Do not use this silicone DOT 5 fluid in ABS systems or mix it with glycol-based brake fluids. Mixing different base chemistries can harm seals, reduce performance, and lead to system damage. Always follow vehicle manufacturer recommendations before changing fluid types.

• Not recommended for ABS systems—avoid installation where ABS compatibility is required.
• Never mix with DOT 3, DOT 4, or DOT 5.1 fluids to prevent chemical incompatibility.
• Flush and thoroughly clean the brake lines if converting from a different fluid type.

How is this pack useful for workshops and restorations?

The six 12-ounce cans offer a practical quantity for repeated maintenance tasks, multi-vehicle shops, or restoration projects that require a silicone brake fluid. The smaller can size helps reduce waste and makes handling easier during service jobs.

• Six individual 12 oz. cans for multiple uses or vehicles.
• Compact cans are simple to store and pour during maintenance work.
• Ideal for restorers who prefer a non-hygroscopic fluid for classic brake systems.

Who is this for? This Johnsen's Silicone DOT 5 Brake Fluid pack is aimed at classic car owners, restoration specialists, and independent mechanics who need a silicone-based, low-moisture brake fluid for drum and disc systems that do not require ABS-compatible fluids. If your vehicle’s manufacturer or braking system specifies or permits silicone DOT 5, this six-pack of 12-ounce cans gives a convenient supply for full-service jobs, topping off, or multiple-vehicle maintenance. Always consult your vehicle manual or a qualified technician before switching fluid types to ensure compatibility and safe operation.