HI, are there certified mopar techs here who can tell me where to apply dielectric grease to my spark plug wires that I am replacing on my 2008 Dodge Grand Caravan? I am trying to do this according to strict mopar specs, so as not to cause future problems. When I google it, I get varying shades of answers. Some say put the grease in boots on both ends of the spark plug wires. Some say only put it on the spark plug end only, never the coil pack end. Some show videos of just putting the grease in the opening only of the boot. Some show putting the grease in a thin layer inside the boot all the way down to, but not touching the metal connector inside. Some say put a little on spark plug tip to avoid corrosion, some say only if corrosion is a big problem in your area. NOt to sound silly, but I would like to apply the exact same way a certified mopar tech would at a dealership, so very-specifics are helpful.

 

I use a small tube and put a circle of grease just inside the opening on the end of the spark plug end. Pushing it into place will smear it along the procelain and keep it from adhering to it over time. This will also seal out moisture. It doesn't conduct electricity by itself but it does promote electrical connections.