It is genetic - in my family there is no history of it as it is a recessive gene but my mum and dad were both carriers. In Scotland up to 13% of the population has red hair, but around 40% of the population is thought to carry the recessive gene responsible for the world's rarest natural hair colour.
On the other hand, synthetic base oil molecules are chemically controlled, which provides increased ï¬ lm strength and lubricity over petroleum oils. The performance qualities of base oils have a marked impact on the performance qualities of the ï¬ nished product.
Oil vs Gas. The Difference between oil and gas is that the term oil refers to hydrocarbon mixtures that are liquid at room temperature, whereas gas is a mixture of gas formed from the fossil remains buried deep in the Earth. Gas can be associated with oil, or found alone.