My '97 Honda Civic HX is marking its territory and making a mess on my driveway. It's certainly not worth fixing, so at this point I'm looking to slow/stop the mess. I'm currently running Mobil 1 0w30 which I'm sure is on the thin side of things and not helping anything. Any suggestions on what I should run next (oil/weight)? I live in Kansas where temps will get down to single digits this winter. I was thinking either a 10w30 high mileage, 0w40 or even 15w40. Thoughts?