I know very little about diesel engines (or any engine) and was hoping to get alittle advice/direction before I have go to the mechanics . I have discovered an oil leak on my 29.5. I believe it's oil because 1.) I tasted it and 2.) the oil level on the dipstick was low. It only leaks when the enigne is running. It's a slow drip. And I believe it's coming from (ok, here's where I show my ignorance) the starboard/front side of the engine, just above the impeller, is this the "Fuel filter" ??? I narrowed it down to this "filter" by wrapping a rag around the " filter" and then noticed that the rag was wet and other parts remainded dry. I'm confused because I want to think that this is the fuel filter and that I have bled the engine using the screw on the top. Any advice to get me pointed in the right direction is greatly appreciated. Thanks, Jane