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Originally Posted by homealone
nooooooo - a belt is used to 'take off' a source of rotational energy, if it is squealing then it is slipping, which is bad.
- lubricating a slipping belt will help it sound less stressed, but won't help it turn the thing it is supposed to turning - which is also bad.  |
Don't panic, it just shuts it up for a short while to let you know what it is that is making the noise. WD40 does not have the lubricating power to make the belt slip, the profesionals do this on a regular basis so that they can listen to an engine properly.