I'm ashamed to admit that after owning my Westy for 5 years that I have been using the wrong DOT in my hydraulic system. I changed out the clutch master and slave cylinder's today and as I was wiping up a spill on the reservoir I noticed "Use only DOT 4" on it. What is/are the differences between the two? Am I screwed? But then this is the first time I've had a problem with the system in 5 years.
  TIA,
  Paul Rogers
  85 WWW