Works great!!!
This stuff is the bomb!!!  Dilute (I did 15 parts water to 1 part cleaner) as directed, apply with pump sprayer, let set maybe 5 minutes, spray off with garden hose.  We used it on our aluminum boat.  First application left boat looking a little splotchy/streaky.  Second coat left it looking like new.  If really dirty, it may take a third coat; however, this is so easy and quick to do, it's more like play than work, and it only takes minutes.  No elbow grease or scrubbing required.  If you have mud or water stains on your aluminum boat, the stains literally melt away.  I highly recommend this product.
Rating: 5 stars