Description
Base Oil is the name given to lubrication grade oils initially
produced from refining crude oil (mineral base oil) or through
chemical synthesis (synthetic base oil). Base oil is typically
defined as oil with a boiling point range between **0 and ***0 F,
consisting of hydrocarbons with *8 to *0 carbon atoms. This oil can
be either paraffinic or napthenic in nature depending on the
chemical structure of the molecules.
Group I
Group I base stocks contain less than *0 percent saturates and/or
greater than .*3 percent sulfur and have viscosity index greater
than or equal to *0 and less than **0.
Group II
Group II base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to *0 and less than **0.
Group III
Group III base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to **0.
Group IV
Group IV base stocks are polyalphaolefins (PAO).
Group V
Group V base stocks include all other base stocks not included in
Group I, II, III, IV.
Base Oil is the name given to lubrication grade oils initially
produced from refining crude oil (mineral base oil) or through
chemical synthesis (synthetic base oil). Base oil is typically
defined as oil with a boiling point range between **0 and ***0 F,
consisting of hydrocarbons with *8 to *0 carbon atoms. This oil can
be either paraffinic or napthenic in nature depending on the
chemical structure of the molecules.
Group I
Group I base stocks contain less than *0 percent saturates and/or
greater than .*3 percent sulfur and have viscosity index greater
than or equal to *0 and less than **0.
Group II
Group II base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to *0 and less than **0.
Group III
Group III base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to **0.
Group IV
Group IV base stocks are polyalphaolefins (PAO).
Group V
Group V base stocks include all other base stocks not included in
Group I, II, III, IV.
Base Oil is the name given to lubrication grade oils initially
produced from refining crude oil (mineral base oil) or through
chemical synthesis (synthetic base oil). Base oil is typically
defined as oil with a boiling point range between **0 and ***0 F,
consisting of hydrocarbons with *8 to *0 carbon atoms. This oil can
be either paraffinic or napthenic in nature depending on the
chemical structure of the molecules.
Group I
Group I base stocks contain less than *0 percent saturates and/or
greater than .*3 percent sulfur and have viscosity index greater
than or equal to *0 and less than **0.
Group II
Group II base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to *0 and less than **0.
Group III
Group III base stocks contain greater than or equal to *0 percent
saturates and less than or equal to .*3 percent sulfur and have
viscosity index greater than or equal to **0.
Group IV
Group IV base stocks are polyalphaolefins (PAO).
Group V
Group V base stocks include all other base stocks not included in
Group I, II, III, IV.
