Originally Posted by Mamala Bay
Originally Posted by bchannell
I don't see that it matters what you use, as long as it's the equivalent plug to what's specified. Lots of folks say, use Japanese plugs in Japanese engines, American plugs in American engines etc. I blasphemed and used Autolite in my Kawasaki, and it's running just fine. Does it run better than NGK, I can't see that it does, I can't tell any difference between decent plugs. I've read where some say one brand or the other simply won't run in their engine, who knows, I can't imagine it's a big deal.
When you put many hours on a small engine that stress the spark plug on a commercial level you will notice the difference . Again any spark plug will work fine for home usage with LITTLE hour usage that doesn't have stress on the spark plug vs commercial.
That said Champion is crap vs NGK on a commercial level from my experience not the same league . I don't trust CHAMPION plugs. With many hours of usage stress on a spark plug I'll take the NGK from my experience.
I dunno, I've gone through six tractors, three JD, one WH, one Husq, one Simplicity, and owned a few others at the same time, that the previous tractors were my main mower. I mow about 6 acres a week, and do plenty of tree trimming, and log hauling work. I know it's not commercial use, but it's a fair amount of hard work. I have over 700 hrs on my present JD 425, and I've used NGK, Champion, and now Autolite. I can't say any of them were better than the others. I can say the Champions looked like they were made by grade schoolers in shop class, the quality control was just awful, but they did run ok with no hiccups. I don't use them anymore simply because other plugs are just as easily obtained, and seem much better made.I stress my equipment pretty hard, up hills and over banks hauling everything under the sun, cutting grass that got way to high because of rain or work or whatever. None of the plugs actually wore out, but I just replace them every so often to keep it fresh. From looking at the Champions quality, it doesn't surprise me that you say they don't last in commercial use, but for me and a lot of others that just simply isn't the case. My Husq never had anything but a Champion plug in it from new and is still running on Champions, maybe the same ones, who knows to this day, as a church has it now, and I doubt they do any maintaince on it, and it's a 2010 model, not too shabby.