1991 Acura Legend, I am thinking about running Mobil 0-30 at the next oil change. The car has 112k miles and has M1 10-30 in it now. I have had advice that the lower the viscosity the better for economy and engine wear. I live in Hawaii and the weather averages about 75 deg all year round. The engine is in good shape and oil consumption is minimal. Is this a good idea to change to the 0-30 or continue with the 10-30? What are the advantages of using a 0 viscosity oil?