My car (2003 Honda Civic Si) recommends 5W-20 oil, but also has a model history of cam galling. I was wondering if running 5W-30 will help protect against cam galling, and if it is safe to do in an engine that recommends 5W-20. I am currently running 5W-30 Mobil 1 and a Mobil 1 Filter. Thank you...