I wouldn't put an Autolite in my lawn mower. IMO, that's the worst spark plug on the market. NGK is way to go on a lot more than just boats. I bet if the grass got ass deep to a Giraffe, you would be glad to screw in an autolite and get er done.....especially when the neighbors keep losing there kids in your front yard on the way to the bus....hahahahahahaha
