Most of us already know Spectro Oils for their superior line of motorcycle oils. But you probably didn’t know that the Connecticut-based company also has its own line of DOT 4 and DOT 5 brake fluid, including Spectro DOT 4 Racing Brake Fluid 600, which has a 312 C dry boiling point to solve virtually any fluid boiling problems created by hard riding like racing. $12 (approx., 12-ounce bottle).