A method for forming a bright stock, comprising: performing FTICR on a sample of a feedstock to determine amounts of one or more Z-classes within the feedstock, to determine amounts of one or more homologous series of compounds within the feedstock, or a combination thereof, wherein the Z-class represents the deviation of the ratio of carbon to hydrogen in a compound from the basic ratio of one carbon per two hydrogens; characterized by characterizing waxy components within the sample of the feedstock based on the one or more determined Z-classes, the determined one or more homologous series of compounds, or the combination thereof; selecting at least one processing condition based on the characterization of the waxy components; and i) performing solvent dewaxing on at least a portion of the feedstock under solvent dewaxing conditions to form a dewaxed oil, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more, the solvent dewaxing conditions comprising the at least one processing condition, the at least one processing condition comprising at least one of a pour point, a feed rate, a dewaxing temperature, a solvent to oil ratio, and a dewaxing solvent; or ii) performing catalytic dewaxing on at least a portion of the feedstock under catalytic dewaxing conditions to form a dewaxed oil, the catalytic dewaxing conditions comprising the at least one processing condition, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more. performing FTICR on a sample of a feedstock to determine amounts of one or more Z-classes within the feedstock, to determine amounts of one or more homologous series of compounds within the feedstock, or a combination thereof, wherein the Z-class represents the deviation of the ratio of carbon to hydrogen in a compound from the basic ratio of one carbon per two hydrogens; characterized by characterizing waxy components within the sample of the feedstock based on the one or more determined Z-classes, the determined one or more homologous series of compounds, or the combination thereof; selecting at least one processing condition based on the characterization of the waxy components; and i) performing solvent dewaxing on at least a portion of the feedstock under solvent dewaxing conditions to form a dewaxed oil, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more, the solvent dewaxing conditions comprising the at least one processing condition, the at least one processing condition comprising at least one of a pour point, a feed rate, a dewaxing temperature, a solvent to oil ratio, and a dewaxing solvent; or ii) performing catalytic dewaxing on at least a portion of the feedstock under catalytic dewaxing conditions to form a dewaxed oil, the catalytic dewaxing conditions comprising the at least one processing condition, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more. i) performing solvent dewaxing on at least a portion of the feedstock under solvent dewaxing conditions to form a dewaxed oil, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more, the solvent dewaxing conditions comprising the at least one processing condition, the at least one processing condition comprising at least one of a pour point, a feed rate, a dewaxing temperature, a solvent to oil ratio, and a dewaxing solvent; or ii) performing catalytic dewaxing on at least a portion of the feedstock under catalytic dewaxing conditions to form a dewaxed oil, the catalytic dewaxing conditions comprising the at least one processing condition, the dewaxed oil comprising a bright stock portion having a kinematic viscosity at 100°C of 20 mm 2 /s (20 cSt) or more.