Is Bottled Oil Better?

I think people are confused between drum oil ( branded ) and what was called bulk oil which was abundant 40-50 years ago. This was re-refined oil ( used oil filtered and heater to get rid of the water ) and very cheap. There used to be many cars on the road wit worn out engines and this was a cheap way to keep them running. Even our local Sears sold this stuff and it was never bottled, if you wanted to buy it to take home you had to bring your own container.