The only place I was able to find the Mobil-1 in 0W-40 was Advance Auto. Perhaps AutoZone and others have it as well. I've never found it in a non-auto store. They have 2 or 3, some 4 grades of Mobil-1, but no one stocked the 0W-40...at least not in my area. Also, Advance Auto had the oil on sale for under $5 per quart. Check it out! I'm still 1,000 miles from my Schedule A service...but I am so tempted to change my oil just to try out my vacuum oil remover.