Lots of good oil on the market today and just like car wax we all have our favorite and reason for using it. I almost switched from Brad Penn several years ago because of running alcohol but instead of doing that I Researched what I could do differently. In my case I needed a lean out valve and as soon as my pass was over I now turn both my fan and electric water pump off so I build heat up going to my pit spot. Millions of quarts of Walmart oil sold every day and unless they started doing it yesterday Walmart has never produced a single quart of oil.