Guys, I need your expert opinion.
I had rust proofing done at Krown 6 AM in the morning. Drove to work right after they finished. Drove back home around 5 PM (45min drive each way). 2 min away from my place car starts making weird scratchy noise from underneath driver side. Any ideas what it could be?
-HFC gone bad?
-Gasket blown?
-Flex pipes gone bad?
Edit: Fixed