The PO of my new to me boat decided it was a good idea to store the funnel that he used to fill the 2 cycle oil res in the bilge. Now a lot of the bilge has caked on old oil on it. I'd like to get it off but it's been a *****. So far I've used reg bilge cleaner, the name escapes me at the moment, and Spray Nine. The combo has been working but it's a bit slow for my taste. I was wondering if anyone has a better idea?