DOT 5 mineral fluid is used primarily for racing, it is more hygroscopic than DOT 4 therefore needs changing more often so ok in a race car. I think the jury is still out on synthetic fluid, ok I suppose in a brand new system. I stick to my DOT 4 mineral.


1969 4/4
1995 plus 8
2002 Aero S1
2013 M3W
2014 Plus 8