You can recycle used engine oil at most auto parts stores, as well as at some dealerships or through your local area's ...

It's possible to reuse oil from your motor, but it's obviously not as easy as just emptying and refilling the oil tank.

A replacement for energy-intensive heat distillation could be at hand. Membranes separate or filter out molecules from mixtures according to differences such as size and shape. If molecules are nearly ...