Spark plugs. Bosch, E3, First-fire, NGK, Champion

[Modern Marvel]

Hey guys, I know that this is a question gone over again and again but everybody basically States their preferred spark plug but not what spark plug actually will run better in there particular machine that it is applied to. I have also found which spark plug is in my opinion the best universal plug, the E3, with Diamond Fire Technology. Those of you who have used this plug what are your thoughts and of the others mentioned in the title. Thanks.

 

[Little Al]

The only E3 spark plug I have had dealings with came in a used saw I bought after a 1/2or so hour running the earth electrode came adrif & damaged the piston & cyclindert not impressed & at the price point I would not use again Ive had failures over the 28 or so years with all the popular brands except for Nippon Denso That is the only brand I will now fit/use Also fitted to the commercial logging company I work for & the 10 assorted saws are in daily ( all day) use & no failures

 

[Modern Marvel]

Yes those are no doubt a superior plug and I was also reading an article from the E3 website about some of there first spark plugs fitted for small engines had problems running in two cycles where the electrode fell out due to high compression or something like that I could be wrong but I think that's what it said. Is it possible that the person who had the saw before you could have damaged the plug in any way. I respect your opinion as I am a fellow logger myself.