I bled and replaced brake oil in my RX3 just now. Old fluid was still clear. My F brake master cylinder says to use quality Dot 3 or Dot 4 ???? So I used Prestone Dot 4 synthetic. My only observation is the front seemed like it was never bled ???? as it took a number of pumps before anything even came out the bleeder.
They have always worked but been spongy and not like other brakes I've had on motorcycles. Early on I had the rotor stuttering problem. Replaced rotor and pads and its worked all this while but not as good as I liked. The rear brake always worked better and oil came out as soon as I cracked the bleed screw. I will go try it in a few minutes on the way home and report back tonight after I'm home from some meetings. rj