You should not use dielectric grease on metal contact surfaces that form electrical connections or on wheel bearings or high temperature areas.
You can use dielectric grease on the outside of electrical connections to prevent moisture from entering and on spark plug boots and terminals to prevent sticking and tearing during removal, on battery terminals and cable connectors to prevent corrosion and future buildup and on bulb sockets to lubricate the seal and prevent moisture.
Electric grease is called dielectric grease which is non conductive and silicone based that is used to insulate and protect any electrical components and electrical connections against any moisture and corrosion.
The difference between dielectric grease and regular grease is that the dielectric grease is not conductive and does not conduct electricity like regular grease can.
Regular grease is just a lubricant to reduce friction and wear in mechanical systems such as bearings, joints, motors etc.
Dielectric grease is a silicone based grease which is mainly used for electrical connections and electrical applications which prevents corrosion and moisture intrusion.
Dielectrics grease is a grease whose principal feature is it's ability to resist conducting electricity as much as possible.
Regular grease is mainly used for lubricating bearings and other things that need lubricating.
Dielectric grease is primarily used as an insulator to protect electrical connections from moisture and corrosion and silicone grease or regular grease is used as a lubricant.
You should not use regular grease in place of dielectric grease when you need to use dielectric grease, especially when using it on electrical applications.
Regular grease can cause electrical problems and damage.
You can use dielectric grease on spark plug boots, bulb sockets, battery terminals, trailer wire connections, general electrical connections and general plastic or rubber lubrication.