We don't know each other, but without your work on creating this forum ages ago and all your subsequent very informative posts, it's safe to say I wouldn't own my RGS. Thank you.
Godspeed man, your story is truly a great one.
I have had good luck with both of these ....... one is meant for cleaning guns and it works quite well. The Master STAGES CLEAN2020 I bought through Amazon for $103 CDN and it does work the best but the OTIS Ultrasonic Cleaning Solution works almost as well and is only $64. They both work best at max temp on my cleaner (60 degrees C) and usually only need 20 minutes to and hour to do the job. I quickly clean them in hot water ASAP and so far I have not had any discolouration of aluminum. The Master Stages website shows many different version for different cleaning and washing. I am thinking that for volume purchases it would be the way to go.
I was due to be away for a week for work, before I went I bought some aluminium cleaner for my boats Hull. On returning I gave it a shot, this stuffis pretty potent. Brought it up okay, but where it pools in streaks, has now left it looking like a grey zebra ........ FFS. So, I figure, if I spread the streaks our with a brush as it is doing it’s work, that would help. No, that seems to not allow the stuff to penetrate.Heard on the radio this morning that the best two days of boat ownership are the day you bought it and the day you sold it.