:shrug: i think it comes down to personal preference on wire ends...

lots of wires come with a small packet of dielectric grease in the box. the dielectric grease does two things:

1. helps prevent water coming in and causing corosion and poor contact
2. improves conductivity as dielectric grease is highly conductive

i see shops that use it on every plug and shops that never use it. as for the distributor or coil end i rarely see it used there

i guess its more of a personal opinion on this one