Thanks for the quick response. People who don't mind helping people, what a concept. Anyway being impulsive self I have all ready installed four of eight plugs and now must ask if I should pull them out ?? or continue. I'll wait this time. Is .032 gap correct ? Also have 1 gallon of MB antifreeze. Will mixing with one gallon of distilled water achieve level of coolant necessary if I drain radiator? Again thanks for the help.