My Subaru shows 2 quarts low and will even turn on the oil light. I fill the oil so it is half way between full and fill and the next day I am 2 quarts over full. missing oil magically reappeared. I checked the oil and no oil was on the dip stick. Drove to Auto parts store to get oil (just a couple blocks) by te time I got out of the store, oil was full again on its own. The other day I was 11/2 quarts low so I got an oil change. I checked the oil level after to make sure the shop had correctly filled it having had issues before. The next day I was 1/2 quart overfull. The third day I was 2 quarts overfull. Now, day 4, I am only a 1/2 a quart over full again. No leaks from the vehicle. Oil will disappear then reappear randomly (or so it seems) The oil is hiding somewhere. How is this possible????