Thanks!

 

DOT 4. Brand? Who cares.

 

I've been using a DOT 4 spec fluid made by Pentosin. Inexpensive, German and available at any Advance Auto.

https://shop.advanceautoparts.com/p/pentosin-super-dot4-brake-fluid-1-liter-1204116/10024311-P

 

I think either of what was posted above is fine. Personally I've used the pentosin due to its wide availability

 

I have used Ate for years, just make sure you use dot 4!

 

Nobody using the DOT 4 LV like the book calls for?

Sent from my ONEPLUS 3 using Tapatalk

 

Nobody using the DOT 4 LV like the book calls for?

I do:

https://www.fcpeuro.com/products/dot-4-lv-brake-fluid-1-liter-1224116

 

Superblue

 

^ I don't think you can get super blue anymore. I think it was banned or something due to the color.

 

DOT4 low viscosity or DOT 5.1

 

I use Valvoline Synthetic Dot 3 & 4 brake fluid. I also have another car that uses Dot 3. It's easier for me to use the same fluid for both cars. I have used Pentosin and ATE before. They are both fine brake fluids. OP, I hope your front brake job went well.

 

I use the same in both of my cars.

 

Either Pentosin or ATE is fine, just make sure it's DOT 4. Not sure if DOT 5.1 is approved or not, never heard of it for use in our cars so I'd stick with the DOT4.

And before someone says 5.1 is DOT 5... it's not. Definitely don't use DOT 5! It's silicone based, and therefore hydrophobic not hygroscopic. (i.e, will not absorb any water in the system, potentially very dangerous)

 

umm, isn't dot 4 , dot 4?


do your brakes work better with a certain brand ?

 

According to the above chart from FCP there's a difference in boiling points.

The LV, SL.6, Super Dot 4 and Genuine BMW all have lower boiling points but also may have lower viscosities. The specific viscosities aren't listed there.

 

You just need DOT 4. I think you can find Pentosin in the Autozone, O'Reilly stores. Be sure you do all wheels starting from the furthest wheel working your way to the closest to the master cylinder.

 

I got the ATE, thanks everyone. Doing the brakes today.

 

Straight from the Pentosin horses mouth...

http://www.pentosin.net/f_brakefluid.asp

Pentosin Dot 4 LV is for BMW's from 7/2002 and newer.

 

DOT 4 isn't all the same.

In general the higher the dry boiling point, the more hygroscopic the fluid is. An all-out race fluid needs to be changed every few months (the expectation is before every racing session). A high performance fluid should be changed every year or two. And a fluid that barely meets the DOT 3 spec might be OK for two decades in car-as-appliance use.

Of course the plant can always do a mediocre job of synthesizing the fluid, resulting in a mix of molecules thus a very hygroscopic fluid that still has a low dry boiling point. The difficultly is doing well on both parameters.

Bottom line: buy a quality fluid, but don't buy a "better" (higher dry boiling point) fluid than you need.