The hydraulic fluid in the master cylinder of my 2005 CRV Estate I-CTDi was contaminated (a dirty black colour) when it was serviced a few months ago and was flushed through. The technician asked that I return in a couple of weeks to check the state of the hydraulic fluid, which I did. The fluid was contaminated so was flushed through and again the technician asked that I return in a couple of weeks, which I did and this time, while the fluid was contaminated it wasn’t as dirty as it had been previously. Any suggestions? Thanks in advance.