brake fluid-what and why?

OTB · 03-31-2009, 01:54 PM

Dot 3 and 4 are Glycol based and are hydro attractant; Dot 5 is Silicone based and is NOT compatable with the other types. Mixing Dot 3/4 with Dot 5 can cause catastrophic seal failures/seizures.

The difference between Dot 3 and 4 is the amount of additives used to elevate the boiling point.

Dot 5 Fluid won't hurt your paint, but usually gives a spongier feel, and since it is non-miscable with water, the water gavitates to the lowest points of the sytem and causes corrosion.

Unless your system is specifically designed for Dot 5 and above, using it will garner few benefits.

JMHO

03-31-2009, 01:54 PM	#10
OTB The Man Join Date: Feb 2008 Location: CrabTown USA Moto: 00 Bimota DB4 Posts: 823	Dot 3 and 4 are Glycol based and are hydro attractant; Dot 5 is Silicone based and is NOT compatable with the other types. Mixing Dot 3/4 with Dot 5 can cause catastrophic seal failures/seizures. The difference between Dot 3 and 4 is the amount of additives used to elevate the boiling point. Dot 5 Fluid won't hurt your paint, but usually gives a spongier feel, and since it is non-miscable with water, the water gavitates to the lowest points of the sytem and causes corrosion. Unless your system is specifically designed for Dot 5 and above, using it will garner few benefits. JMHO