I've purchased Schaeffer's, Driven, and just recently, Amsoil (I've used other Amsoil products, but just recently their engine oil). I like supporting local businesses and smaller businesses where possible, and although their oils may be more expensive ($10-$15 more per OCI), I usually only get one or two chances to change the oil in my car a year. Worst case scenario, I spent an extra $30 over the year. Not exactly breaking the bank. It's the same line of thinking that lead some folks to go grocery shopping at a smaller chain rather than Walmart- support the little guy. However, I get why people don't want to spend the extra hard-earned money.