Johnsen's Silicone DOT 5 Brake Fluid 12 oz. Bottles (6-Pack) — Low-Hygroscopic, High-Temp Protection

Johnsen's 7012 Silicone DOT 5 brake fluid is a silicone-based, low-hygroscopic hydraulic fluid sold in 12 oz. bottles (pack of 6) for drum and disc brake systems that are not ABS-equipped.

This silicone DOT 5 formulation was developed to resist water absorption and maintain stable performance under high temperatures. Unlike glycol-based DOT 3 and DOT 4 fluids, silicone DOT 5 absorbs very little moisture, which can reduce corrosion and fluid degradation in appropriate applications. The product is intended for classic cars, custom builds, racecraft where silicone fluid is specified, and other brake systems that explicitly accept DOT 5 — it should not be used in ABS-equipped vehicles.

How does Johnsen's DOT 5 differ from conventional brake fluids?

Johnsen's DOT 5 uses a silicone base rather than glycol-ether. That chemical difference means it takes up far less water, and it remains less prone to internal corrosion when kept sealed and used in systems compatible with silicone fluid.

• Silicone-based, not glycol-based
• Essentially non-hygroscopic — absorbs under 1% water by weight
• Lower tendency to corrode brake system metals when dry
• Maintains performance at high temperatures (500°F protection listed)

Can I use this fluid in my ABS-equipped car?

No — Johnsen's 7012 DOT 5 is specifically not recommended for ABS systems. ABS components and modern braking systems are typically designed for DOT 3, DOT 4, or DOT 5.1 glycol fluids, which have different compressibility and compatibility characteristics.

• Do not use in ABS or anti-lock brake systems
• Use only in systems explicitly allowing DOT 5 silicone fluid
• Check vehicle manufacturer or service manual before switching

What maintenance or handling should I follow when using silicone DOT 5?

Because silicone DOT 5 is less hygroscopic, it doesn’t require as-frequent replacement purely for moisture control, but careful handling is still important. Keep bottles sealed, avoid mixing with glycol fluids, and flush the system completely if converting from another fluid type.

• Store bottles tightly sealed and away from heat
• Flush system thoroughly before switching fluid types
• Avoid mixing silicone DOT 5 with DOT 3/4/5.1 glycol fluids
• Follow recommended service intervals for your vehicle and usage

What performance benefits does this product provide?

Johnsen's 7012 offers high-temperature protection and stable brake performance when used in compatible systems. Its low moisture uptake helps slow internal fluid breakdown and reduces the risk of boil-related issues under heavy or sustained braking, provided the system is designed for silicone fluid.

• Rated for high-heat protection (500°F listed)
• Reduced moisture absorption versus glycol fluids
• Good choice for vintage cars, show vehicles, and certain race applications
• Sold as six 12 oz. bottles for multi-vehicle servicing or spare supply

Who is this for: Johnsen's 7012 Silicone DOT 5 Brake Fluid is best suited for owners and mechanics of classic cars, custom builds, and specialty vehicles that specify silicone DOT 5. It appeals to restorers and enthusiasts who want a low-humidity-absorbing brake fluid and those servicing multiple vehicles or preparing a vehicle for track days where DOT 5 is acceptable. Do not buy this product for modern cars with ABS or for systems that require glycol-based fluids; always confirm compatibility before use.