Champion DOT 5 Brake Fluid is silicone-based brake fluid and is used in applications like classic, antique or collector car or trucks where the vehicle may be in storage or used occasionally. DOT 5 is a little more expensive, but it has a dry boiling point of 530 degrees. Also, DOT 5 does not absorb any moisture.
DOT 5 will not harm painted surfaces and acts as a weather barrier for your brake system, preventing rust
A DOT 5-filled system will last longer and works well in cold temperatures