Green Earth Technology/ Not Available yet
Like its bio-friendly two-stroke counterpart
, Green Earth Technology's motor oil
might live up to even a Prius owner's high environmental standards. Claiming to be completely biodegradable, the used oil can be mixed with G-Disposoil to become soil. Even the container is biodegradable. Sadly, it's not available yet, but G Oil's website says it'll be widely distributed any day now.