Gasoil is a broad term that can refer to a range of intermediates and finished petroleum products, generally in the diesel or VGO range of distillation profile.

Intermediates sometimes referred to as gasoil include:

Light atmospheric gasoil (LAGO) - Diesel range straight run material from the atmospheric distillation tower

Heavy atmospheric gasoil (HAGO) - Straight run material in between the diesel and VGO range from the atmospheric distillation tower

Vacuum gasoil (VGO) - the lighter resid fraction from the vacuum distillation tower

Coker gasoil - VGO range product from the coker

Hydrocracked gasoil - VGO range material from the hydrocracker

Finished petroleum products sometimes referred to as gasoil include:

Diesel

Heating oil or industrial gasoil

Marine gasoil (marine diesel)