FRETS.COM
Shop Tip #268
© Frank Ford 2006; Photo by FF

I still occasionally change my own engine oil, and I recycle it myself.  Most regular shop and hosehold oiling jobs don't require high grade lubricants.  Casters, door hinges, wheelbarrows, and myriad other devices are perfectly happy with used auto engine oil.  I simply dedicate one oil can for that purpose so I don't get it confused with clean oilers.