Spark Plugs

I used to run Autolites until they outsourced production to China and quality dropped (surprise). I agree about not running Champions; they're poorly made. Interesting experiment: pick up one NGK ZFR5N, one Autolite 985, and one Champion RL13LYC. All equivalent plugs in each maker's line. Spend five minutes carefully scrutinizing the details of each plug. The poor material and build quality of the Champion and Autolite compared to the NGK is as obvious as a nun in a whorehouse.