To actually get the oil out, they had to invest in a rotary hand pump or an air-powered dispensing system.
They moved the drum to a cool, dry corner away from direct sunlight to prevent the oil's additives from breaking down or "dropping out" of suspension. buy oil by the drum
When space allowed, they stored drums on their sides with the bungs (plugs) at the 3 and 9 o'clock positions . This ensured the seals were submerged in oil, preventing air and moisture from being "inhaled". To actually get the oil out, they had