I am doing ARX on my Hyundai Tiburon and my oil is 3 quarts of Supertech Conventional 10w30 and 1/2 quart of BP 10w30 Conventional. OIl doesn't really look to dirty as I expected.
well,, maybe I did it wrong? I took the leftover 1/2 quart of BP 10w30 Motor oil and pre mixed it.. then I let it sit for 2-3 months. The BP oil looked black before i put it in the engine.. don't know if it effectred its performance....
thanks,
john