I just changed my oil (M1 with Wix) and was wondering if you guys stay with the suggested 5w-30 during the summer or if you change over to 10w-30. The manual says that for best fuel economy use 5w-30. I live in Dallas so it never gets much below about 20F in the winter and in summer it's hot as f**k.
Anyone.. anyone... Bueller. Bueller.
Anyone.. anyone... Bueller. Bueller.