186 Maintenance, Service PlanBrake fluidBrake fluid is hygroscopic, i.e. it absorbswater. If the brakes become hot, such aswhen driving on long downhill stretches,vapour bubbles can occur in the water,which can have an extremely adverseeffect on braking power (depending on theproportion of water).The fluid change intervals specified in theService Booklet must therefore beobserved.Windscreen wiperClear vision is essential for safe driving.Regularly check the windscreen wiper forcleaning effectiveness. We recommendthat wiper blades be replaced at least oncea year.If the windows are dirty, operate thewindscreen wash before switching thewiper on in order to prevent wiper bladewear.Do not switch windscreen wiper on ifwindows are icy, since this may damagethe wiper edges or the wiper system.If the wiper becomes frozen on to the glass,we recommend that it be released with theaid of Vauxhall De-icer Spray beforestarting the vehicle, to prevent wiper motordamage.Smearing wiper blades can be cleaned witha soft cloth and Vauxhall WindscreenWash Solvent.Wiper blades whose lips have becomehardened, cracked or covered with siliconemust be replaced. This may be necessaryas a result of the effects of ice, thawing saltor heat, or the incorrect use of cleaningagents.Switch off the windscreen wiper inautomatic car washes - see pages 15, 192.Windscreen wiper blade maintenance -see page 194.9 WarningWe recommend that you have brake fluidchanged by a Vauxhall AuthorisedRepairer, who will be familiar with therequirements of the law as regardsdisposal of brake fluid and can thus helpto protect the environment and yourhealth.
