Goldenpony

The manual recommends DOT 3 fluid. I am going to do a bleed & flush. Can I upgrade to DOT 4 fluid?

owero01

I would recommend sticking to specs. Don't know what will happen with the 4.

Argonaut

Yes, you can use DOT 4. I'm using ATE Super Blue.

RodeoFlyer

^^^^^^^^^Then how can you answer the question???????????? [sm=icon_beat.gif]

The answer is yes. I use Motul RBF 600. It has a higher boiling point than most of the other dot 4 fluids out there.

Red06

+1 No issues.

gas_meet_foot

I use ATE Gold here (DOT4).

zkiller

Then dont attempt to answer the quetion if you have no idea.
I use Castrol SRF DOT4 it is awsome but very expensive.

Derf00

Dot 3 and 4 are fully compatible with each other meaning you can even mix them if needed. Primary difference is Dot 4 has a higher boiling point than Dot 3. What you want to stay away from is mixing Dot 3 or 4 with Dot 5. 5 is completely different and in some cases detrimental to your braking system.

If you want the full benefits of Dot 4 you will need to flush out the Dot 3. When doing this, do not allow ANY air to get into your braking system. That air will reak havoc on your ABS module and in most cases has to be pressurized out at a shop.

drbobvs

It would seem brake fluid doesn't "circulate" much, if at all. Once the fluid is near one of the calipers, it doesn't get back up into the reservoir to mixunless "pushed" up there as when you manually compress the caliper when changing pads.

I have had people just suck out the fluid from the reservoir only and refill it with new fluid, but I would suggest flushing out the whole system via bleeding the brake lines while feeding the DOT 4 into the reservoir. This way you can be assured you have DOT 4 at/near the calipers where the heat is.