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Motiva manufactures what base oils?

The STAR base oil range comprises STAR 2, STAR 4, STAR 6, and STAR 12 base oils.  These base oils are manufactured using a proprietary combination of distillation, special processing including isomdewaxing, and hydrotreating. 

Motiva STAR 4, STAR 6, and STAR 12 base oils are API Group II products. 

Motiva STAR 2 base oil is manufactured using similar processing as the Motiva Group II base stocks, with conditions optimized to produce a high quality light viscosity base stock with high saturates and low sulfur.

How does API classify these oils? And what does this mean?

Motiva STAR 4, STAR 6, and STAR 12 base oils are API Group II products.

API 1509 Appendix E provides definitions for a base stock, a base stock slate, and base oil.  This document also divides all base stocks into five general categories (or Groups).

Group I, Group II, and Group III base stocks are defined by Saturates and Sulfur content and Viscosity Index (VI).  Group IV base stock is a polyalphaolefin (PAO).  Group V base stock includes all other base stocks not included in the previous four categories (such as esters and pale oils).

The approved test methods are:

  • Saturates: ASTM D2007
  • Sulfur: ASTM D2622, ASTM D4294, ASTM D4927, ASTM D3120
  • Viscosity Index: ASTM D2270
API Base Stock Categories

API Base Stock Categories

Group

Saturates, %

 

Sulfur, Wt %

V.I.

I

<90

and/or

>0.03

80-119

II

≥90

and

≤0.03

80-119

III

≥90

and

≤0.03

≥120

IV

All Polyalphaolefins (PAOs)

V

All Base Stocks not included in Groups I-IV

STAR Group II base oils can be used to formulate API licensed engine oils provided the API guidelines for using these Group II base oils has been followed.  Approved Base Oil Interchange (BOI) and Viscosity-Grade Read-Across (VGRA) rules within the slate allow you to use different base stock viscosity grades to blend a given formulation or to blend various lubricant grades with the same technology.  Some engine oils may require use of other base oils which is allowable by API provided the appropriate bench and engine testing (if necessary) is completed.

What is the advantage of Motiva’s Base Oils?

All the major additive suppliers are experienced in formulating with Motiva STAR base oils.  Motiva’s Port Arthur Plant is one of the largest Group II lube oil plants in the world.  This plant utilizes multiple lubricant trains, which allows production to proceed on one or all units simultaneously.

Some oils can contain high levels of sulfur and aromatics, which are compounds that may lessen performance.  Motiva STAR base oils have almost none of these impurities, which can result in enhanced oxidation performance for some fully-formulated lubricants. 

What products can be manufactured from these base oils?

Automotive Lubricants –

A wide variety of Motor Oils and Drive Line Lubricants can be manufactured with Motiva STAR base oils.

Industrial Lubricants – 

Motiva STAR base oils can be used to blend Industrial Lubricants in ISO-VG 10 thru ISO-VG 100. With the use of an appropriate heavier base stock, STAR base oils can also be used to blend Industrial Lubricants in the ISO VG 150 thru ISO-VG 460 range.

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ISO and AGMA Viscosity Grades

ISO and AGMA Viscosity Grades

ISO and AGMA Viscosity Grades

are specified at 40ºC

Blending Stocks

Industrial Viscosity Grades

ISO-VG

AGMA Grades

Bright

Stock

680

8

460

7

 

320

6

 

220

5

 

150

4

STAR 12

100

3

 

68

2

STAR 6

46

1

 

32

-

STAR 4

22

-
 

15

-

STAR 2

10

-

What additives have approval in Motiva base oils?

A wide variety of additive approvals exist in Motiva STAR base oils and the best source of this information is from the additive suppliers.  Afton Chemical, Infineum, Lubrizol, Oronite, and others have used these base oils in the development of many of their additive systems.

Does Motiva produce wax?

Motiva does not produce wax since all of our dewaxing capabilities have been converted to isomdewaxing processes, which converts wax molecules into premium high quality lubricant components.