Several years back the department of defense tested simple green and released a report stating "Don't use Simple Green to wash aircraft or aircraft components. This product has been through DoD testing and was determined to be highly corrosive on aircraft aluminum. It can also be a catalyst for hydrogen embrittlement in high strength aircraft alloys."
Simple Green addressed the problem by developing a formula specifically for use on aluminum alloys: Extreme Simple Green.
The alloys used on our bikes are basically the same as aircraft parts.... so be careful which formula you use.
When I wash my bikes I spray the entire bike down liberally with simple green (especially drive train). Then I just use a bucket of soapy water and scrub everything down. I have never had any adverse effects to any finish on any parts of my bikes.
I will say though, that automotive brake parts cleaner will completely remove the painted logo's from just about any finish.
Hi all ! It says on the simple green product data sheet not to use it on aluminum as it will corrode . I use citrus orange about 50/50 with water and rinse well . Now we get to hear everyone that has used simple green and never had a problem . It also says not to use it on aircraft , LOTS of aluminum !
I used simple green on a black anodized Santa Cruz Blur. The phone rangy and I forgot what I was doing. After about ten minutes, I came back to rinse it off and found little white spots that never went away.