Jules2477

Fluid changes vary considerably depending on manufacturers yet they all use the same stuff! Under extreme conditions and a period of very harsh driving it is possible the fluid will overheat prematurely if it is contaminated with moisture. This will cause a condition known as brake fad but in normal driving it is most unlikely to make any difference whatsoever to the emergency stopping distance. Manufacturers are covering their backs, quite wisely in our sue culture world but if DIY servicing, a tester will quickly establish the actually condition of the fluid. 5 or even 10 year old fluid can often prove to be still serviceable.

Moisture in the brake fluid can lead to brake fad but it takes some extremely hard driving braking from high speeds to get hot enough for that actually happen in a modern car. Otherwise, it will normally make absolutely no difference to the stopping distance whatsoever and certainly not to a single emergency stop. Ex vehicle examiner