My cat c7 has about 60k on the engine. I was working on it this weekend and noticed an engine oil leek around the area of the oil filter. It may not be the oil filter leaking but it is definitely on ...
I picked up the motorhome today from the Cat shop. The oil leak was in the gasket between the oil filter base and block. They told me that this was a common place for the cat c to leak oil. I'm glad to get this fixed. It always seem to be something.