Permatex Dielectric Tune-Up Grease Give your flow of electrons a little boost with a dabski of Permatex Dielectric Grease. Dielectric Tune Up Grease prevents shorts, unwanted grounding and voltage leakage around electrical connections exposed to water, moisture or dirt. Dielectric Grease also helps electrical connections resist salt and corrosion. Dielectric Tune Up Grease extends the life of delicate bulb sockets and prevents spark plugs from fusing to boots - a common culprit of modern high energy ignition systems. Features: Protects electrical connections and wiring from salt, dirt and corrosion Extends the life of bulb sockets Prevents voltage leakage around any electrical connection Prevents spark plugs from fusing to boots Excellent for high moisture / wet / off-road environments Ideal for modern high energy ignition systems, spark plug boots and trailer wiring harnesses