Guys,
It is a bit of over spray of an anti rust coating we put on the tapping plates to prevent corrosion during shipping and storage. Nothing to be concerned about at all. We are starting to ship alot of filters to China, they love American brands over there and we have to do this to prevent corrosion from forming during 3 months in a shipping container. The product is totally soluable in engine oil and has been thoroughly tested.
It is a bit of over spray of an anti rust coating we put on the tapping plates to prevent corrosion during shipping and storage. Nothing to be concerned about at all. We are starting to ship alot of filters to China, they love American brands over there and we have to do this to prevent corrosion from forming during 3 months in a shipping container. The product is totally soluable in engine oil and has been thoroughly tested.