good day all.hope you all had a safe holiday weekend. my question is, is a ngk br6s hotter or colder than a ngk 7s.should you run a hotter plug for trolling (1975 evin 25hp).right now im running the br6s" in the motor,but next week im going for the first time to a camp that we bought in feb,to do some laketrout fishing so im going to be trolling alot.<br />hotter or colder for trolling.<br />thanks Z
