There is only two things that will cause "making oil" - fuel or water mixes in with the oil. Often, this will happen when the engine is running too cold. Is the oil cloudy/milky? If so, that is caused by water in the oil. Smell the oil and see if you can detect the smell of gasoline. Pull & check your t-stats to make sure one or both are not stuck open.
If none of the above, then it's possible that the engine oil was over-filled at the last change out. There are several reasons that can happen - e.g. plain carelessness, all of the old oil was not drained out, but you still added the 8.3 quarts (assuming new filter) that the manual calls for, etc.
It could be something else far more serious, but eliminate the obvious first.