This is the same drive train as the cruze eco with the 6speed manual transmission. I am wondering if some of you guys with either car can chime in? Are these cars very hard on oil? Should I run flat 5k OCI with 5w30 syn dexos 1, or follow OLM? Also I live in a very hot climate in the south valley near Phoenix, AZ. During the summer should I run something a little thicker than 5w30?