Used motor oil which has impurities and dirt is fed right into a centrifuge. The centrifuge has a rotor that spins a really high RPM (revolutions each and every minute) also it pushes the impurities to the wall in the container that houses the rotor. This works because the mass from the impurities is greater than the mass from the oil particles. Appropriate extraction methods are used in order that impurities along with the clean motor oil are properly separated, and the oil is getting ready to be re-used. These filtering systems may also be appropriate for use with small-scale biofuel setups to take out any impurities. Truth is subjective. If there is one word of advice I would leave to the kids it could be, you?re happier being DIFFERENT. If the most people are doing something so you choose to be part of it then you?re probably over a fast track to self-destruction. In my quarter century of your time on this earth, I've had time to see disturbing alterations in the mentality of those. Should I cast blame about the media? Obama? Conspiracy theories? No, I blame you. Hindu culture is in no way the greatest religious group in India. This belief enforces the cultural notions of honour, shame, purity and pollution. In this society, adolescent girls are hoped for to take care of their virginity or safeguard their 'purity' until marriage. Whatever her religion, each time a woman turns to prostitution she, her children as well as the place where she lives becomes forever 'polluted'. Those who sell themselves for sex are shunned. Get your copy of Ruth's ebook The Powerful Secrets of Seduction.