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Message: <blockquote data-quote="meetoo" data-source="post: 215475" data-attributes="member: 4025">Check the engine oil spec in your car manual and if it is 0-40W, then it's okay to use 0-40W. But if it is 0-30W, then using 40W means you're not giving the right protection to your engine. All you succeed in doing is increasing engine wear in the long run.Decisions shouldn't be base on myths that people pass around. One common myth is that it's good to lift the wipers when parking the car in the sun so that the rubber don't stick to the windscreen and deteriorate due to the heat. Actually, glass is a poor conductor of heat and on a hot day if you touch a metal part of the car, yes it's hot, but if you touch the windscreen, it's not hot at all. So all you succeed in doing by lifting the wipers is stretching the wiper springs fully for extended time. In the long run this lessens the tension of the wipers on the windscreen and hence their effectiveness. Think about it...</blockquote>