brake fluid on paint!!

[Grant]

I poured some over one of my scrap cars roofs once. Did f*ck all not even a stain.

Was it new fluid? Its mainly the old, used fluid that is corrosive. For the reason stated below

Was it a PSA car? If so he could be lucky. If it was running LHM fluid as standard, this is far more gentle on paint than standard fluid.

The reason old brake fluid is worse on paint than newer stuff, is that the corrosion prohibitive additives degrade over time and become reactive. Hence the corrosion on older braking systems.

You will notice less corrosion on a LHM system, the same age as a glycol-based system (i.e. DOT 3 upwards).