[davedrivesody]

Think of it as roughly equivalent of a drain and fill of the trans. Draining what is in the sump and replacing it is about 1/3 refresh initially.

Except ATF is constantly circulating; brake fluid does not circulate to any significant degree.

Brake fluid contaminants (e.g. moisture) gather at the lowest point, in the calipers. Removing it requires bleeding.

A partial brake fluid change is done for the appearance of maintenance. It's not proper maintenance.

 

[davedrivesody]

When I change front brakes, I’d empty the reservoir and bleed the front calipers.

Perfectly fine, as long as the 3-year brake fluid service interval is maintained. There's no requirement that all 4 corners be bled at the same time, although it does simplify record-keeping.

Don't forget about the rears though. Rear pads work less and last longer than the fronts, but the brake fluid service interval is the same.

 

[davedrivesody]

I would not do fluid flush at 30k.

He was referring to brake fluid not trans.

Brake fluid service is every 3 years. His 2019 is due.

 

[davedrivesody]

they are saying it is due now

Brake fluid needs replacing only every 3 years. Your 2023 isn't due until late 2025 or early 2026 depending on its manufacture date.

do I use a better quality fluid

Any DOT 3 fluid is fine. There's no difference, even for Honda's own fluid.