I have a 1989 Ramcharger with a 360 TBI. It has just over 105k miles on it and sat for three years prior to me purchasing it in May. I did a full tune-up, oil change, and replaced the faulty idle speed control motor. The thing runs great now, but the oil pressure reads a little low (about one-third). Assuming the the sending unit is accurate, is this too low? I'm running fully synthectic 10w-30. Thanks, Brendan.