So, I've had mediocre results with Fireclean (I did NOT apply it the way F2S said to, just a wet layer on the baffles) and better results with DOT 5 brake fluid. However, I was using DOT 5 brake fluid as this silicone oil was not in stock on Amazon at the time. That is the stuff the original article recommended. I will order some at the end of the month and report back once I have to clean again.