Hi all, Bought a 2nd hand bike. Everything is great, no scratches, no funny noises or vibration. Ride is smooth. I read the bike manual, it says to top up the brake fluid once you see it being depleted front little window at the right handle bar, which it is. And the manual says either put dot 3 or dot 4 brake fluid in.Question:- Is there much difference between Dot 3 or Dot 4? Any particular one that is better?- There‘s still a bit of the old fluid there. Do I need to drain it out first before adding in new fluid? My concern is I don‘t know what the old fluid is. Are Dot 3 and Dot 4 brake fluid mix-able?
This Site Might Help You. RE: Motorcycle: Dot 3 or Dot 4 brake fluid? Hi all, Bought a 2nd hand bike. Everything is great, no scratches, no funny noises or vibration. Ride is smooth. I read the bike manual, it says to top up the brake fluid once you see it being depleted front little window at the right handle bar, which it is. And the manual says either.
Jed is right,. 3 4 are compatible. If the fluid is anything other than a pale yellow CHANGE IT; by completely bleeding until it runs clear.
