What's the deal with champion?

StrokerScamp said
The E3s and the like are nothing but snake oil. Don't waste your money.

IMHO more so with a carbureted engine because it's recommened that they're changed every 12,000 miles or year (whichever comes first).

I've found they actually worsen gas mileage on a fuel injected car. Will probably go back to Champions on everything, plus Champion is made in the USA