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? Jason July 06, 2023 06:20 Updated There would be no problem with the insulator. If it's 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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