Function
The lifeblood of the hydraulic brake system.

Part numbers
• Castrol GT LMA DOT4 brake fluid 12 fl.oz.

Comments
Exceeds DOT4 specs which specify a dry boiling point of 446F and wet boiling point of 311F. Castrol LMA can be mixed with other glycol based brake fluids and is very gentle on hydraulic system seals since it does not eat away at rubber. 3/4 to 1 litre (at the very most) of brake fluid is required to flush the A4 brake system.