Can I use DOT 5 brake fluid instead of DOT 4?
When you change over from DOT 4 to DOT 5 you need to use a brake system flush (this can be purchased from any parts store) to clean out the system. It will be necessary to disassemble your calipers and other components to replace the rubber seals and clean out all of the old fluid. If you are looking for a high performance brake fluid, you may want to consider using DOT 5.1 as it has a higher boiling temperature and all you would be required to do is to drain your system/flush and add the new fluid.
