Hi All
I have a 1991 VW Golf (81,000 miles, 1300cc).
I noticed that the exhaust clamps and bolts near the front of my car were rusting. I therefore applied some copper grease to them in order to delay the onset of rust.
I have now noticed that the copper grease has changed from a copper colour to black.
Is this due to the heat and have I been wasting my time?
Thanks
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Yes,it will go black but no you haven't,it should still work.
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