[R-390] More chemicals from the dark side

[Barry Williams]

A member informed the list some years ago that the Air Force had 
prohibited the use of Simple Green for exterior aircraft cleaning 
because it corroded metal when not washed away thoroughly. A thorough 
washing was meant as when parts were disassembled.


the other Barry


> It may well have been discussed here, as is just about anything and
> everything.
>
> The Karcher Corp. that makes pressure washers, makes the pump out of
> Aluminum and Brass.
>
> They are very picky as to what should or should not be run through them.
>
> When directly contacted, they said Simple Green was just fine.  I've
> been using it for over 8 years now.  No damage or issues.  I don't even
> have to run clear water through it, although I do anyway.
>
> If it was so detrimental to aluminum, then why is it so highly
> recommended and used by General Aviation owners?
>
> Bob - N0DGN
>
> On 2/4/2011 12:21 PM, Shoppa, Tim wrote:
>> Didn't we discuss here in the past year, something about keeping Simple Green away from aluminum chassis or at least making sure it was very thoroughly washed off afterwards to prevent long-term corrosion from residues? When you gotta clean off the cleaner that you used to clean off the cleaner it starts sounding like "the old lady who swallowed the fly".
>>
>> Most of the geartrain parts are steel but I wonder if some parts might be aluminum?
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