Either or neither or both, or a dozen others..
Search the Havoline, you'll see lots of op/ed on it. Quite popular. You'll also find by searching "5W20" that 5W20 has proven so robust in SM/GF4-level testing, it doesn't much matter which brand you use given the quality of the base oils involved in their various formulations. Someone will be along shortly to gun me down on this, but I'll stand on it.