I happened to look underneath the rear of the car this afternoon and noticed some funny looking things "growing" on the pipes leading to the mufflers. Is this something to be concerned about? I will keep an eye on it now that I noticed this but thought to ask others to see if anyone else also noticed the same on their cars. I know we had a pretty bad winter and NYC Sanitation loves spreading tons of road salt. Should I try taking a wire brush to it and see if it can be removed? What do all think?
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