Malibu: 4 fresh quarts of Q-Horsepower 5w30 with a Napa Gold filter. There wasn't much time on the oil, but I took a sample anyway since this oil was punished through 3 blizzards, an ice storm, and record cold temperatures. Combine this with a ton of short trips, very little highway time, and a fair amount of low-RPM driving this UOA could be brutal.