Hydralic 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, brake 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 slaves cylinders went from a return rate of aprox 50% within 6 months to less than 5% by simply advising installers to follow the simple instructions.....
