Hjarrett,

I'm not saying they are true or not but I
have NEVER had anyone give definitive proof that it actually happens.


Well, the guys at Aviation Consumer got this from the manufacturer (I
hope it's ok to quote this):

"Simple Green is a household cleaner that’s mildly alkaline. Its
manufacturer, Sunshine Makers, Inc., says “the aqueous-base and
alkalinity of Simple Green...can accelerate the corrosion process.
Therefore, contact times of...Simple Green...with unprotected or
unpainted aluminum surfaces should be kept as brief as the job will
allow...never for more than 10 minutes. Large cleaning jobs should be
conducted in smaller-area stages to achieve lower contact time.”

Sunshine Makers notes that Simple Green doesn’t have Mil-Spec approval
and Navy tests done in 1993 revealed that Simple Green failed sandwich
corrosion and long-term immersion-corrosion tests on aluminum. "

They conclude it wouldn't be their first choice and they would at least
only use it on painted surfaces and rinse very thoroughly.

--
Thomas Borchert (EDDH)