Brake fluid is possibly the single most neglected component of the automobile. Most high performance drivers check their tire pressures and change their engine oil at frequent intervals, but neglect to change their brake fluid or consider a performance fluid in general. Available in STR-600 and STR-660 formulations for high performance street and racing applications respectively, the new Stoptech DOT 4 brake fluid is engineered to optimize brake system performance at high operating temperatures. It guards against boiling and subsequent loss of efficiency at severe racing temperatures while maintaining safe performance levels on the street and offering increased life between fluid changes. Stoptech Brake Fluid comes bottled in a special metal container that is not only more durable, but also gives the fluid up to 25 percent longer shelf life than typical plastic bottles provide.