The Differences Between Ignition System Grease

Couple of comments:
- the white thermal paste is heat conductive, but contains Berrylium which is a known carcinogen. A newer paste & better has silver in it, which conducts heat better.
- I would never use dielectric grease on plug leads, sockets etc. It is a grease, so it will attract pollutants, dust etc from the air which could bleed off the spark.