RH665 is not the same as other Racing Brake Fluids, it has been specially formulated for racing applications where braking systems operate at very high temperatures.

It is a complex mixture of Glycol Ether Borate Esters and Polyalkylene Glycol Ethers together with advanced corrosion inhibitors, antioxidants and other modifiers. The result is an exceptional brake fluid with not only a very high boiling point but which also conforms to FMVSS 116 DOT 4 and maintains its class leading viscosity, lubricity and compressibility performance at extreme temperatures to ensure braking system reliability and performance and a Rock Hard pedal. 

RH665 has the highest guaranted minimum Dry Boiling Point (ERBP) of any DOT 4 Brake Fluid, 325oC, to guard against vapor lock and give a Rock Hard pedal even under extreme racing conditions. Many manufacturers quote “Typical” boiling points – do not be deceived, this is not the minimum specification that you could receive, it can be the result of a test on a single sample. “Typical” values for RH665 are invariably higher than 325oC. A similar situation applies to “Wet” Boiling Point, RH665 is guaranted to be above 195oC “typical” values are much higher and at least the equal of other leading brands.

Specifications

• Type Synthetic Specification FMVSS 116 DOT 4
• ERBP Dry Boiling Point 325oC*
• ERBP Wet Boiling Point 195oC*
• Viscosity at 100oc 2.6 cSt
• Viscosity at – 40oC 1475 cSt pH 7.12
• Density at 20oC 1.073
• Compressibility at 100oc 1.01 x 10 -3 MPa-1