| I also agree that 4:1 is enough for most jobs. I always agitate with a brush though and some german cars take a couple applications. But all in all, I can't see why anybody would ever need stronger than 4:1. I also don't see how you could do without Wheel Brightner considering the price/product value you get out of a gallon. I clean A LOT of wheels and a gallon lasts me a LONG time! |