Good brand for DOT4 brake fluid

**kevindd992002** · October 13th, 2021 12:38 PM

Originally Posted by Wh1stl3r

I use a hygrometer to test the fluid. There are a lot of cheap ones in Lazada/Shopee. I noticed 2-2.5 years is about the time it takes to get to 4+% water.

But as *Vodka mentioned above, would using a hygrometer at the reservoir an accurate test?

**yapoy86** · October 13th, 2021 01:14 PM

thickness po sa brake pad.. pag di na kita yung guhit sa gitna, replace..

**Vodka** · October 13th, 2021 01:27 PM

so after 16yrs of changing brake fluid every 3yrs i finally got some corrosion pitting inside my rear wheel cylinder, which resulted in a slow-ish leak. that's good enough i guess

every 2yrs is going to be even better

**Wh1stl3r** · October 13th, 2021 01:47 PM

Originally Posted by kevindd992002

But as *Vodka mentioned above, would using a hygrometer at the reservoir an accurate test?

Probably not that accurate but it will give you an idea how much water is in there. Flush every 2 years is the sweet spot for me.

**Wh1stl3r** · October 13th, 2021 09:04 PM

Glycol based brake fluids (all except DOT 5) are completely miscible with water. Even with the limited movement of fluid from the master to the slave cylinders they should mix freely and completely.

**dr. d** · October 13th, 2021 09:56 PM

Originally Posted by kevindd992002

Is this applicable for other oils (CVTF, engine, gear) too?

So even though the brake pads are still thick I still need to change them if they squeal? I hear occasional faint squeals only when braking while the road is wet/raining. I thought a brake system cleaning is the solution to that.
Fusion R says the pads are still thick and do not need replacement yet.

nopo.
only break fluid is formulated to be hygroscopic (attracts water).
oils are not, and they should better not be!
heh heh.

if the talyer-that-makes-money-by-servicing-your-breaks says you don't need break pad replacement, i will tend to believe them.