Brake Fluid for Honda???
 

Honda stated use genuine Honda Dot 3 brake fluid.

Should I use Dot 4 or Dot 5.1 brake fluid instead genuine Honda brake fluid?

Assuming this is not a troll post...

If you don't intend to engage in any high performance driving, there is really no need to go beyond DOT 3 brake fluids. There is also no need to use genuine Honda brake fluid either. As long as it's DOT 3, 4, or 5.1, it is something your Honda can use.

I drive many city driving and some downhill driving. Recently, I feel that the brake pedal is not that firm after engine fully super hot. Cold engine, the brake is working fine. That's why looking for some higher boiling point brake fluid.

More important than the grade of your brake fluid is the age. When was the last time you've had your brake fluid changed? Depending on who you ask, it typically needs to be changed every 2 - 3 years, but I personally wouldn't go more than 2 for a typical car (even if it doesn't get driven much). And if you've ever had an incident where you boiled your brake fluid -- ie. the pedal sank into the floor with little or no pressure -- you need to replace your brake fluid asap.

Also, I find that at some dealerships' service department, they don't do as thorough a job in bleeding brakes as I'd like.

What brake pads do you have? Sounds more like the pads than the fluid boiling that's causing some fade

Also inspect condition of flex lines.

About 5 years ago!!!!

Will change it very soon!!!!!

Should not be the pads. I am using Akebono brake pads (front) and Nissin brake pads (rear). Both changed about half years ago.

Updated!!! Changed ATE Typ 200 racing Dot 4 brake fluid after one week. now, the brake becomes normal. Thanks Traum