^yes....and no way a piston can contact a spark plug.
I got good results by using a small model airplane brush to apply the dielectric grease to each plug's ceramic after the plugs were installed. boots slid on and clicked so easily.
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, dual tan tops, 2nd owner.
2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 24,000 miles.