When replacing components:
When changing components that use brake or clutch fluid, be sure to use the proper fluid (usually DOT 4 brake fluid for Volvos). It is also necessary to flush the lines before installing slave cylinders, calipers etc. Many people simply pull the old unit off and then "slap" the replacement unit on which causes any old fluid or contaminents to damage the replacement when the lines are bled. Our experience with clutch slave cylinders went from a return rate of approximately 50% to less than 5% by simply advising installers to follow these simple instructions.

Brake fluid:
Remember that brake fluid absorbs water vapor from the air. This water contributes greatly to the decline of your hydraulic cylinders. For this reason, it is recommended that you flush hydraulic systems every two years. This is most important for your brakes' hydraulic system.