If you don't have a tube of dielectric grease, get one. This stuff really can save some headaches. It seals the boots on your spark plug wires and keeps them from welding themselves to the plug insulator. It seals out moisture from electrical connections, protects battery terminals from the fluffy white corrosion and it even stays where you put it when you need to lubricate a hard to get to pivot or hinge. It does seem to get everywhere though and a little goes a long way. For about $3 and change, you can't beat it as a part of your tool kit.