Should I Switch To 10W-30 Motor Oil For Summer?
Update- May, 2024 A reader asks: I use 5W-30 motor oil in my Infinti G35 during the winter and my owner’s manual suggests that it is suitable to use 10W-30 in warmer temperatures. Is there any real benefit to switching to 10W-30 in the summer and back to 5W-30 in the fall? Answer: There is…



