Z Z Z New member Nov 28, 2009 #1 10w30? 10w40? 10w50? I live in Southern California, and drive about 10,000 miles a year. It has 12,000 miles on it. Also, would it be good to use 100% synthetic in my car?
10w30? 10w40? 10w50? I live in Southern California, and drive about 10,000 miles a year. It has 12,000 miles on it. Also, would it be good to use 100% synthetic in my car?
