I am experiencing the same problem. My oil pressure is not as low as your's but I have lost about 20 lb. I done the rebuild on my engine and even went to the volume pump. The pressure stayed up a while and then went down again. I also developed a bad leak at the rear of the engine. I haven't went into it yet, going to be my winter project. Keep us posted on what you find. Just wanted you to know you are not by yourself.
