1998 Oldsmobile Achieva Owner's Manual - Page 167

Hydroplaning Hydroplaning is dangerous. much water canbuild up So under your tires thatthey can actually ride the water. on wet This canhappen if the road is enough and you're going fast enough. When vehicle is hydroplaning, your it has little or contact with the road. no Hydroplaning doesn't happen often. But it can if your tires donot have much tread or the pressurein one or if more is low. It canhappen if a lotof water is standing on the road.If you can see reflections from trees, telephone poles or other vehicles, raindrops "dimple" the and water's surface, therecould be hydroplaning. Hydroplaning usually happens at higher speeds. There just isn't ahard and fast rule about hydroplaning. The best adviceis to slow down when it is raining. Driving Through Deep Standing Water NOTICE: If you drive too quickly through deep puddles or standing water, water can come through your in engine's air intake and badly damage your engine. Never drive through water that is slightly lower than the underbody your vehicle.If you of can't avoid deep puddles or standing water, drive through them very slowly. Some Other Rainy Weather Tips Besides slowing down, allow some extra following distance. And be especially carefulwhen you pass another vehicle. Allow yourself more clear room ahead, and be prepared to have your view restricted by road spray. Have good tires with proper tread depth. (See "Tires" in the Index.) 4-19