This can happen when the oil is lower than normal. When you turn either left or right the oil can move away from the sump pick-up and cause the oil pressure to drop. I would purchase an additional quart of oil each time you change the oil or at least keep one on hand when you notice the oil is getting low add some and the issue should quit. You may also want to try a can of Restore. It will help reduce oil consumption and will also increase compression by filling in small scratches in the cylinder walls. I use it and it does work.