@Big Marc ; agree that such oil consumption with 20 weight oil is entirely normal. If you drive 16,000 miles a year you would have to add 8 quarts of oil, instead of the expected 4 quarts with older engines and heavier oil. That’s a whole 4 quarts at $3 a quart for good oil. So $12 per year is not worth fussing about.
When the warranty expires, you can go to 0W30 full synthetic, which is a very good choice for US driving.This oil will lower your consumption during highway driving.