Octane A1 gasoline

Nashin with octane (with a abbreviation a) different qualities create different qualities

Hydro -carbon

Hydrocarbon 1

Bitumen 1/2 code 1

Bitumen 1/4 code 1

1/4 Code 1

Crude oil

Raw or petroleum is a thick, brownish -brown or dark green or black green, found in the upper layers of parts of the Earth's shell.