Re: Green bumper crud?
 

I have tried the "safestrustremover" product, after seeing the results NJSteve had with it, on iron oxide with great results. I don't think the green crud is iron oxide so I'm not sure how it might work on it. ALso, the product description says it's not an acid.

Verne

Re: Green bumper crud?
 

They may say that, but ask for the MSDS sheet. What's it say?
Most / all companies won't let a product in the door without a MSDS, so it shouldn't be hard to get.

I was incorrect - I have the MSDS for RidRust. Same results for removing rust.