Home Forums Shifter Karts Question about switching back to DOT 5 Fluid from DOT 4 Reply To: Question about switching back to DOT 5 Fluid from DOT 4

#67528
Matt Martin
Participant

if the brakes are binding, i’d check the bore of the master cylinders, and bore of the brake calipers – make sure they’re not terribly scored up.

I would also call the manufacturer/distributor for the parts you have, and see what they say to run.

 

Remember DOT5.1 =/= DOT5.

DOT5.1 and DOT4 are gylcol-based fluids.

DOT5 is Silicone.

 

What that means is that you usually don’t find rubber seals compatible with both – it’s one or the other.

 

 

 

EDIT: it seems OTK uses DOT5 (silicone-based fluids).

My intrepid with Righetti Ridolfi Master cylinders runs DOT4 or gylcol-based fluids.

If you ran the wrong fluids, you’ll need to replace all the seals in the brake system – both master cylinders, and front and rear calipers.