Brightened my trailer
Mixed it up in a bucket per directions. Applied with acid brush. It brightened up my trailer. There were some spots that took many, many applications and never did come up. I'm not sure why. Check the directions before you buy,  do not used on certain aluminums (eg: coated). Shipped from seller in Florida, not Amazon, which was fine.<br /><br />Update. I tried this again the next summer in stronger doses. WORKED AMAZING. What I learned is that if it doesn't foam up a bit, it's too diluted. 1:1 worked like a miracle. Unreal! I completely endorse this cleaner!<br /><br />Check the before and after pictures. No work, all chemical reaction.  A+!
Rating: 5 stars