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.
Before we can tackle what's new in synthetic motor oil technology, wÂ­e should first make sure that we know what synthetic oils are. Mineral or conventional motor oils come from the ground, like the stuff that bubbles up in oil fields from Texas to Saudi Arabia.On the other hand, synthetic oils are man-made.efore we can tackle what's new in synthetic motor oil technology, wÂ­e should first make sure that we know what synthetic oils are. Mineral or conventional motor oils come from the ground, like the stuff that bubbles up in oil fields from Texas to Saudi Arabia.