My Chevy burns oil (oooh....shocking, I know....) I stopped at my favorite O'Really's today and got a quart of their 10W-40 HM to top it off. It was cheap. Just wondering if it's a decent oil compared to the Valvoline HM I have in it? The Chev uses 1 quart per 1000 miles....it'd be nice to save a few bucks on oil until I build my new engine.