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By joshuaho96 · Posted
Not sure why but RBF660/700 or Castrol SRF is listed as DOT4, not 5.1. -
Interesting....can't say I've ever checked it, have always just changed it in the off season as practice -
By Murray_Calavera · Posted
Just checking, when we are talking about high temp fluid, are we all referring to DOT 5.1? I haven't had any issues with changing it every 2-3 years. -
Yeah that is still true AFAIK.....good brake fluid should be changed annually because it absorbs water faster which is more often than most mechanics would do it. There are cheap tools that check water% in brake fluid if you all scientific about it. I for sure would (do) run good brake fluid in anything that even casually saw the track like Murray said; avoiding the risk of "exciting" fade is worth it
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Well, back in the day..... "race" fluids, which were essentially only really "high temp" fluids, used to absorb water more readily. So they really needed to be changed more often anyway. The coincidence of that being directly necessary along with it being what racers would do as a matter of course was just fine.
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