Grease for Ignition Boot Used during the installation of the ignition boot on spark plugs, distributor, ignition coil, and other components to prevent the rubber from sticking. It can also be used when making your own ignition cables. Apply a thin layer on the inside of the ignition boot before installation to facilitate disassembly at a later time. Installation of Ignition Boot 1 pack of grease is sufficient for installing ~4-6 ignition boots. Manufacturing Your Own Ignition Cable 1 pack of grease is sufficient for mounting ~2 ignition boots / 1 ignition cable. Note The grease should not be used on the metal surfaces of the ignition wire