Sorry that was one I found on the Internet. The actual filter is below. I was on the phone to a guy I know who is a mechanic and he said do not put that filter back in. He said the water will likely damage the paper and cause fibers of paper to get in, although he did say I might get away with it, but not having a compressor to test makes it difficult. I won't be able to buy a new filter for a week so because we don't make the trip to town too often so not sure if I should dare try put this one back in.. what do you think? Oh and yes it is a bit of oil on the underside of the filter (pic 3).