NAPA stores also carry the product, in the nearby town of Sumner (which is not a major sized city) their store has all different types. It is up to the stores as to what they carry. I did find the 10W30 listed on the website, and the store about 6 miles from where we live had straight weight 30 in their on-line ordering information. The chain auto parts stores have different store sizes (like A,B,C) and smaller sized stores may not have the full selection of various products open to them. The first O'Riley store I visited (about 5 miles from our house) said they could not order it. The larger store could order it and I received a total of 12 quarts (2 6 quart boxes) in less than 48 hours from order placement with no charge for freight (it came in with the store's next order from distribution).
