As per topic, how frequent you change your car brake fluid?
As in manual book for most new toyota is every 40k km or once in 2 years.. some of my friends change it every year, some change it every 20k km..

Follow the recommend interval is good enough. If you have the time and money then changing it more frequent is better. No problem.

Follow the book, whichever come first.

Worse thing that can happen, is the brake fluid is saturated with moisture due to leak, and at high temperature the brake fluid boils and bursts the brake lines. See table below, on the effects of moisture to the brake fluids' boiling point.



This post has been edited by alexei: Mar 19 2020, 01:50 PM

Every 40-50k km is good enough.

Depends on brake usage as well. Gentle drivers can follow stated interval, aggressive drivers or Genting employees should consider checking and changing earlier

Brake fluid they not expensive you can just change it every year
Same to your coolant and power steering fluid unless your are electric power steering

Now back to brake fluid all brake fluid with boiling point after period of time will have very thin layer sort of water , here start creating air bubbles can travel to your brake horse and stay between the brake line and creating loose brake feeling when you use brake , always happen on truck and lorry when accident saying no brake

Brake hose won't easily Burst even the rubber one can hold minimum 800 psi burst around 1500 psi for normal everyday car won't be able reaching the limit or the minimum

In long term this not good condition brake fluid can causing brake cylinder rust and rouch surface and causing those oring become harder and causing leaking

The feeling are very similar when you use water hose on bathroom when you use your thumb hold the end when the hose not fully fill with water the empty gap no pressure then when filling up you can feel the pressure and the power keep pushing your thumb away

This post has been edited by zuozi: Mar 19 2020, 02:35 PM

There's a study suggest that DOT3 does not lose its boiling point as much as DOT4 after absorbing same amount of moisture. Probably this tell us that DOT4 fluid require more frequent change than DOT3 fluid.

if you're doing it at SC, high chance they never even change it...only topup if they see it decreases

Well if using high performance brake fluids then can be more expensive, for example Motul 5.1 is about rm50-60/500cc btl. Some more exotic ones can cost even over rm100/500cc. So if you don't drive 40-50k km per year then no reason to waste money changing it yearly.

as per manual recommendation

im doing it every year.

This

I did remember they change it at 40k km.. quite strict toyota nowadays, even the aircon service is at 30k km interval..
Now i already did service outside due to budget constraint.. so i will change in this few days..
Thanks to all reply here..

2 things u need to know abt SC
1. how to know if they have change is by looking at the receipt at how they charge u...they will charge u few L of brake oil and labour charges to flush it and bleed it
2. even if they charge u, that doesn't mean they got change it for u
yes, it's true...happen many case already...they charge u doesn't mean they did the job the charge u for

The manual said every 40k, means every 2 years. My experience, even 4 years also no problem.

I see that people said top up when level dropped. This is not a good advise. If there is no leak, it is normal for the fluid level to go down. The reason is the brake pads get thinner and thinner, thus causing the level dropped. Just make sure there is no leak though.

Once the level go to L (Low), it is about time you want to change brake pad. It serves as indicator for me. DO not let the SC top up the brake fluid because you will lose your indicator.

How on Earth you need a aka high performance brake fluid on everyday normal car? Kek......

If your car already equipped with the specifications aka high performance brake fluid which means are sports cars or luxury cars already right? If you already can afford the sports cars or luxury cars the brake fluid RM 50 to 60 for them 60 cent's only right?

how frequently can you exceed the 300c red hot on disc rotor XD always jam break after 160km ? Heh.

After brake fluid drop should top up no matter how since engine vibration, road vibration etc when the fluid not enough can causing creating air bubbles

Well i did hear about some SC didnt do as they written in the resit.. but its kinda rare case for toyota where i hardly heard about it..

I use them on mine coz sometimes on spirited driving or downhill, normal fluid can fade.

Then maybe upgrade ceramic brake system?4 port or 6 port?ceramic 380mm disc rotor? Since spirited driving can be so dangerous normal brake or mid range still can causing brake fade once over heating