WD 40 on wiper blades - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 11-01-2013, 12:05 PM Thread Starter
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WD 40 on wiper blades

My Dad says he used WD 40 on his wiper blades to keep them clean, soft & performing better. I would think the petroleum based WD 40 would not be so good for the rubber blades. Any comments?
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post #2 of 3 (permalink) Old 11-01-2013, 12:10 PM
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I'm with you.

I too have heard all sorts of tales of yore, and maybe in the olden days before they really understood the science of chemistry and special compounds for things like wiper blades, maybe it was a good thing.

But nowadays? You'd be more likely to ruin a set of wiper blades or at least reduce their life appreciably.

Want them to last longer? Remove them and get them out of the sun when not in use. We used to do that in Phoenix all the time. When I was poor I simply carried a spare set of blades with good refills on them and would swap them when it rained. Otherwise the sun rots them pretty quickly, and even WD-40 won't help that.

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post #3 of 3 (permalink) Old 11-01-2013, 12:13 PM
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You are correct. AP 303 UV protector can be used, but do not get it on the glass or edge of the blade that makes contact with the glass.
There is actually a reference to AP 303 being used happily by members of the Bob is the oily guy forums.
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