Posted 12/21/2020 13:05 (#8687088 - in reply to #8686412) Subject: RE: Cleaning aluminum
East Central Indiana
We also had good luck with fleet bright acid on and old (1976) east that had no gloss left. It turned a little bit white but after a few regular hand washings looked pretty nice, and it is slicker than before. I would never use acid on a trailer that still has some gloss left.
Probably a good idea to use acid on a cool foggy morning.