Synthetic refers to any material made from non natural sources. This means that a product such as cloth is made from a chemical source rather than the fibers produced by nature. Cotton, linen, and...
Oil usually refers to petroleum lubricant. It is refined product of crude oil pumped from underground oil fields around the world. Synthetic oil is lubricant manufactured as a substitute for...
Yes, according to Valvoline's web pages they are compatible. There are however some instances where fully sythetic oils should not be used, e.g rotary engines and wet clutches. So it is advisable to...