Roger Ford Posted August 11, 2015 Share Posted August 11, 2015 Yes. "Wet" is defined as 3.7% water by volume, which presumably meant something to somebody once. Link to comment Share on other sites More sharing options...
martyn Posted August 11, 2015 Share Posted August 11, 2015 3.7% is used because testing has shown that this is a realistic level of water content after 2 years of service. Link to comment Share on other sites More sharing options...
TomB Posted August 11, 2015 Share Posted August 11, 2015 So if I'm preparing for a track day next month, the dry value is more relevant, and given there is only 5c between the DOT4 and 5.1, I'll stick with the DOT4. I tend to change fluid every couple of years, probably unnecessarily! Link to comment Share on other sites More sharing options...
Paul Deslandes Posted August 13, 2015 Share Posted August 13, 2015 If you change it, just flush through/bleed each caliper with fresh fluid until its running clear. Don't drain the system first or you'll have a hell of a job getting all the air out. Don't ask me how I know............... Link to comment Share on other sites More sharing options...
elie boone Posted August 13, 2015 Share Posted August 13, 2015 It takes me about 1h to put it on axle stands and flush, bleed the brakes and about 1 ltr to refill with big brakes, 0,75 for std brakes Link to comment Share on other sites More sharing options...
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