I’m leaving on a 2200 mile round trip Saturday in my Prius C. I need to top off the 0W20 (factory fill) , probably a ¼ qt or less will be required. I don’t think I would get into any trouble using the Mobil 1 0W20 I have in my stash for my other Prius. I could drop by my Toyota dealer though on the way home today and pick up a quart of TMO 0W20 if the consensus is to use only Toyota oil. I am about 3500 miles away from needing an oil change BTW. Thanks.