Is it common for 25mm Ecotec manifold insulator's to discolour? After a few months it looks like it's been soaked in oil. Is it common or possibly have a deeper issues? Siya September 29, 2023 19:15 There would be no problems with the insulator. If its soaked in oil you may have PCV issues or something related. Comments 0 comments Please sign in to leave a comment.
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