Hello ! I use the Würth company spray, which is designed to prevent moisture in electrical connections. It works quite well. I sprayed the ends of the ignition wires both inside and outside, shake off the excess liquid and connect to the car. I also sprayed the ignition coil from the outside with the same spray. In 1997, I made my Opel Ascona 1.6 carburetor such a test, I sprayed all the ignition wires and the distributor cover inside and out with the same spray. Then I washed the car engine with pressure from the water hose. After washing the engine, I took off the distributor cover, shook it clean with a lot of water, put it in its place and started the engine, the engine started well as before washing the engine .Würth makes a good moisture control spray!