That costs money and rest assured, the corporation isn't eating that cost. "Popular" brands have an artificial cost to the consumer and part of that has to cover their marketing costs.
Schaeffer Oil has never been out of love. Unless you have been living in a cave for the past 22 years many members have used it and reported various results with it. Do a search on Schaeffer's or go to their web site at:
I used to work for a ma'am.That did touring buses and we had drums of Schaeffers 15w40. They've been around a long time and are mostly noticed in the midwest especially in missouri.
When you travel to St. Louis, stop at the factory and take a tour! Right near the Arch.
I walked around with the founder’s grandson or great grandson (don’t remember).
He was in his eighties and rode around on a Cushman scooter. Sharp as a tack, told me about the history of the company, current markets, products in the pipeline, company’s vision etc.
I bought a case of 15w40 and my diesel loved it.