Engine coolant is a water based fluid that retains the warmth from the motor. The motor coolant winds up hot itself as is exchanged to a radiator situated at the front of the vehicle. Veins in the radiator contain the hot coolant which air cools as the vehicle pushes ahead.
Petroleum products are organic compounds made in oil refineries. They result from refining (changing) crude oil (also called Petroleum) into more useful products.
Well-known petroleum products include:
Gasoline and Diesel fuel
Liquefied Petroleum Gas (LPG)
Other fuels, such as fuel oil and Kerosene
Asphalt (mainly used in asphalt concrete)
Paraffin wax
Tar
Plastics
In addition, oil-refineries also sell other things that come form the refining process, most notably
Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive distillation. Tar can be produced from coal, wood, petroleum, or peat. Production and trade in pine-derived tar was a major contributor in the economies of Northern Europe and Colonial America. Its main use was in preserving wooden sailing vessels against rot. The largest user was the Royal Navy. Demand for tar declined with the advent of iron and steel ships.