03warrior
04-08-2009, 06:05 PM
Base Oil Category ......Sulfur (%).....Saturates(%)..........Viscosity Index
Group I.....................>0.03 ..........and/or <90 .............80 to 120
Group II....................<0.03 ..........and >90 .................80 to 120
Group III...................<0.03 ..........and >90 .................>120
Group IV...................All polyalphaolefins (PAOs)
Group V....................All others not included in Groups I, II, III or IV (Esters)
There are five specific categories of base oils. These categories define the type of base stock the oil is formulated from.
Group I - Solvent Freezing
Group II - Hydro processing and Refining
Group – III Hydro processing (hydro cracking or hydro isomerization) and Refining
Group IV -Chemical Reactions: Group IV base oils are chemically engineered synthetic base stocks
Group V - As Indicated: Group V base oils are used primarily in the creation of oil additives.
Group I.....................>0.03 ..........and/or <90 .............80 to 120
Group II....................<0.03 ..........and >90 .................80 to 120
Group III...................<0.03 ..........and >90 .................>120
Group IV...................All polyalphaolefins (PAOs)
Group V....................All others not included in Groups I, II, III or IV (Esters)
There are five specific categories of base oils. These categories define the type of base stock the oil is formulated from.
Group I - Solvent Freezing
Group II - Hydro processing and Refining
Group – III Hydro processing (hydro cracking or hydro isomerization) and Refining
Group IV -Chemical Reactions: Group IV base oils are chemically engineered synthetic base stocks
Group V - As Indicated: Group V base oils are used primarily in the creation of oil additives.