Penrite Super Dot 4 Brake Fluid is a premium quality, non-silicone, non-Mineral/petroleum based, fully synthetic brake fluid designed for use in a wide range of brake and Clutch applications. Super Dot 4 brake fluid is recommended for re-Fill or top-up of brake and clutch systems in passenger cars, 4WD's, motorcycles, light and Heavy Duty commercial vehicles, mining, construction and agricultural equipment that require a non petroleum based Dot 3, Dot 4 or Super Dot 4 brake and clutch Hydraulic fluid. Super Dot 4 brake fluid is suitable for use where the vehicle manufacturer specifies Dot 3 or Dot 4 brake fluid. Super Dot 4 brake fluid should be changed according to the manufacturers service specifications. Super Dot 4 brake fluid can be used for first fill or refilling a brake or clutch system. For best results, the system should always be flushed with Penrite Brake Fluid Super Dot 4 prior to first fill or before refilling the system.