Castrol SRF Brake Fluid
Designed for high-stress racing applications, Castrol's SRF brake fluid is just about the best brake fluid out there today. This product far exceeds the standards set by the DOT4 specification with a dry boiling point of 590 degrees Fahrenheit and a minimum wet boiling point of 518 degrees Fahrenheit. Needless to say, there won't be any overheating/boiling issues with ratings like this.
This brake fluid features silicon ester, which is highly resistant to absorbing water and other contaminants which can reduce brake system performance by lowering the boiling point. The only drawback here is the exorbitant price, which can make brake fluid changes very expensive. However, the performance and technology of the Castrol SRF brake fluid allow extended brake fluid drain intervals, which somewhat evens out the cost issue.