oil consumption

The oil burn rate on my Lycoming IO-360-C1C6 has been pretty consistent at 1-1.25qts/10h (assuming I keep it right around 6qts). This morning after I got back I noticed that there was substantially more oil usage (or oil leaked...). I don't normally check oil until my next preflight, but this...

Would like to hear some feedback from those with experience troubleshooting the 0-300’s Burning close to a quart every 2 tach hours 1700smoh 120 since cylinders was oh’d Chrome cylinders No air/oil separator Crankcase pressure none when checked with manometer Try to keep oil level around 5.5...