Has anyone ever heard of this? I did a search and found nothing. I just received an email from Northern Auto Parts and it was in there so I found it on the site. Sounds very similar to the Safety Kleen oil as it is recycled and re-refined. According to the site it is highly re-refined Group II oil. Not to bad of a price to try it as it is 2.99 a quart. So if anyone is curious search northern auto parts and then look under brands for ECO Engine Oil.