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 ...
Well, I cleaned up the oil and ran the engine for a while. It was just a fast idle. It did run long enough to warm up. I was not able to see where the oil was coming from. I will be driving about 60 miles this next weekend and will check it again. It looks like I lost about 1-2 quarts in the last 2500 miles. It is always something with a motorhome.