At that time, early 80s, they seemed poised for the synthetic lubricant market. The product I liked best was the air filter - I liked the idea of whipping off a filter, washing it out, letting it dry, reoiling it and popping it back together. The hypoallergenic laundry detergent smelled OK and didn’t bother my skin [I have a sensitivity to many of the scenting and filler agents normally used] and they had a bypass oil filtration system that made sense to me upon looking at it.
I detest MLM - preying upon people who are financially unsecure, the whole downstream sales being what make you the money is horrific to me. If you can’t make the money upon your own selling efforts, you might as well get back into the normal rat race - preying upon other people is reprehensible. At least if you work for a shoe store you are selling a known product.