My ‘02 X with a manual transmission is leaking clutch fluid. I tracked the source to the boot on the clutch release cylinder. Advanced Auto sold me gear oil to top off the master cylinder, but the oil doesn’t stink like gear oil. It says “brake fluid” which I’m inclined to use; but the brake fluid I have (from an older bottle that’s probably 6+ years old) is clear and the fluid in the MC is brown. To top this off, the previous owner supposedly installed a new clutch and I have no idea what he used as fluid. What should be used on a first gen here? Dot 3 or 4 brake fluid?