Okay since I'm still a newbie and really give it a once over come warmer weather, I'm reading and learning all about my 8N. I'll be changing the oil, both engine and hydraulic and anything else I can change, I want to make it mine. I also want to change the plugs and probably points and the such that goes with it. But back to the plugs, with my curiousity searching the net, I've seen a few thoughts on plugs, most say only use autolite, some say 437s and .025 gap and others say 216s and .020 gap, this is all for a 6 volt system which I plan on keeping. So is there a right answer to the proper spark plug, or is it whatever works in your tractor, right now the plugs look like little rust balls. Your patients with us newbies, I take my hat off to you all.