zafarhayatkhan, I agree, I going to switch the Mobil ow-40 from my 15w-50, I'll let every body know if the engines changes sound-etc. and one I can see will be the oil pressure.
Before I change I want to clean my fuel system, and clean some carbon out of the engine, whats the strongest/safe cleaner, and how about the Delco X-66 cleaner?
enjoy your drive, timreid
500E sway bars
210 16in wheels