Brake Fluid Flush Due At 30,000 Miles, ...anyone have theirs done yet? Options

[BadBrad]

Also if you do a lot of hard braking, [racing on the track or long descents down high steep mountain roads] the fluid temp can get very high, the water can boil and turn to steam. When that happens you can lose most if not all of the ability to brake.

Hugh? Brake fluid turn to steam? Brake fluid is oil ... so, no steam

I know this is an old thread; I was searching for specific directions on brake bleeding and came upon this information in need of correction. Couldn't help myself.

Brake fluid is hygroscopic meaning it attracts water from other sources like the atmosphere. So it will eventually absorb water. Brake fluid gets hot; the water will vaporize (turn to steam) and give you a mushy pedal since vapor is compressible.

[RX400h]

Also if you do a lot of hard braking, [racing on the track or long descents down high steep mountain roads] the fluid temp can get very high, the water can boil and turn to steam. When that happens you can lose most if not all of the ability to brake.

Hugh? Brake fluid turn to steam? Brake fluid is oil ... so, no steam

I know this is an old thread; I was searching for specific directions on brake bleeding and came upon this information in need of correction. Couldn't help myself.

Brake fluid is hygroscopic meaning it attracts water from other sources like the atmosphere. So it will eventually absorb water. Brake fluid gets hot; the water will vaporize (turn to steam) and give you a mushy pedal since vapor is compressible.

I have decided to have our fluid flushed when I take the RX in for that steering recall (which takes at least 7 hours, by the way). Our RX has approx. 41,000 miles on it.

I used to do this, myself, but the combination of working with a hazardous fluid and its effect upon a painted garage floor has convinced me to just let the dealership do it. The cost is just a bit over $100.