Dielectric grease isn’t the name of an evil supervillain, and it’s not a coroner’s shorthand for someone’s cause of death (in this case, by electricity). It is, however, a type of grease used on a variety of things, from traffic lights to marine applications and, yes, on your automobile. In fact, it’s so versatile that while it is mainly used to protect and insulate electrical components, it can also be used as wheel-bearing grease. As with most lubricants, dielectric
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