1. Reproduction of any material whether by photocopying or storing in any medium by electronic means or otherwise is prohibited without prior written consent of Infineum International Limited. © Copyright INFINEUM INTERNATIONAL LIMITED 2006. All rights reserved See the legal disclaimer notice on www.Infineum.comwww.Infineum.com "INFINEUM", "DOBANAX", "PARATAC", "SYNACTO", "VEKTRON", and the corporate mark comprising the interlocking ripple device are trademarks of Infineum International Ltd. “VISTONE” is a trademark of Exxon Mobil Corporation used under licence by Infineum International Limited. Phosphorus Retention Analysis of TMC Reference Oil Data Prepared for ESCIT, December 12,2006 Andrew J.D. Ritchie, Wangkan Lin

2. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 1 Summary of Contents 1.Progress made in agreeing on the assumptions and detail of Phosphorus volatility calculations centered on the IIIG test qMass balance calculation spreadsheet 2.Analysis of the TMC IIIG reference oil datasets 3.Infineum conclusions.

3. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 2 IIIG Mass Balance Calculation Spreadsheet (1) Example: Reference oil 434 mSpreadsheet circulated to all interested parties.

4. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 3 IIIG Mass Balance Calculation Spreadsheet (2) Example: Reference oil 434

5. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 4 Progress Assessing Industry IIIG Reference Oil Data mPeer review of calculation method completed and circulated to ESCIT members. qCalculations made only for the IIIG but test calculation method can be applied to any stationary test. mTMC requested calibrated labs to provide reference oil data (434,435,438) qData posted to web site qAll members can perform calculations using Infineum spreadsheet and TMC data.

6. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 5 Average Total Phosphorous Losses in IIIG Reference Tests

7. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 6 Average Total Phosphorous Losses in IIIG Reference Tests

8. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 7 Average Phosphorous Loss via Liquid in IIIG Reference Tests

9. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 8 Average Phosphorous Loss via Liquid Loss in IIIG Reference Tests

10. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 9 Statistics of Phos Loss due to Liquid Loss mLSMEANS analysis of Phos Loss due to Liquid Loss of All Three Oils qTotal Sum of Square = 10.26 qLab: Sum of Square = 0.40 (4%) F-ratio=1.60 and not significant qOil: Sum of Square = 0.45 (4%) F-ratio=2.71 and Prob(>F)=0.071 qError: Sum of Square = 9.44 (92%) mOil 434 and Oil 435 qLSMEANS difference = 0.036; Std Error = 0.048 qThe difference is not significant

11. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 10 Average Phosphorous Loss due to Volatility in IIIG Reference Tests

12. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 11 Average Phosphorous Loss due to Volatility in IIIG Reference Tests

13. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 12 mLSMEANS analysis of Phos Loss due to Volatility of All Three Oils qTotal Sum of Square = 6.05 qLab: Sum of Square = 0.45 (8%) F-ratio=9.89 and significant qOil: Sum of Square = 3.77 (62%) F-ratio=123.5 and significant qError: Sum of Square = 1.74 (29%) mOil 434 and Oil 435 qLSMEANS difference = 0.32; Std Error = 0.02 qThe difference is significant Statistics of Phos Loss due to Volatility

14. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 13 Average Phosphorous Retention in IIIG Reference Tests

15. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 14 Average Phosphorous Retention in IIIG Reference Tests

16. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 15 mLSMEANS analysis of Phos Retention of All Three Oils qTotal Sum of Square = 1381 qLab: Sum of Square = 43 (3%) F-ratio=3.02 and significant qOil: Sum of Square = 788 (57%) F-ratio=83.6 and significant qError: Sum of Square = 538 (39%) mOil 434 and Oil 435 qLSMEANS difference = 6.3; Std Error = 0.36 qThe difference is significant Statistics of Phos Retention

17. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 16 Summary of IIIG Reference Oil Phosphorus Loss Calculations mReference oil data on Reference Oil 438 and a “GF-4 prototype oil” Reference Oil 434 show some typical phosphorus volatility numbers and allow improvements for GF-5 to be targeted. q434 and 438 have similar Phosphorus volatility characteristics which are probably typical of the majority of commercial GF-4 oils. ACC is soliciting members to provide commercial GF-4 IIIG data to confirm this. TMC manual quotes: 434: 0.0732% P; 438: 0.0937% P. q435 has measurably better Phosphorus volatility characteristics than oils 434 and 438. mIn the IIIG, using data from 434 and 438 only, normalized to 0.08%P, most of the phosphorus lost occurs through volatility. Phos. loss through volatility((1.15*0.08/0.0732)+(1.26*0.08/0.0937))/2 = 1.17 grams Phos. loss through liquid form((0.67*0.08/0.0732)+(0.78*0.08/0.0937))/2 = 0.70 gram Total Phos. Loss1.87 gram Total Phos. Input in engine oil4.67 gram Percentage Phos Loss40%

18. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 17 IIIG Reference Oil Phosphorus Loss Calculations – Directions for GF-5 mIn discussions with some individual ILSAC members, it is Infineum's understanding that it is ILSAC's desire to achieve a P volatility reduction of 0.03/0.08 or 37.5% over current GF-4 oils. mThis equates in the above data to a P loss through volatility limit of about 0.73g Phosphorus. i.e. 1.17g*(0.05/0.08) = 0.73g mEstimated Phos retention at 0.73 gram qTotal Phos input at 0.08% phos level = 4.67 gram qEstimated Phos Retention = (4.67 gram – 0.73 gram)/4.67 gram * 100% = 84.4%

19. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 18 Conclusions mThe reduction in the total amount of phosphorus lost, achieved by using a low volatility ZDDP instead of a conventional ZDDP, can be about the same as the reduction achieved by reducing the phosphorus content in the oil from 0.08% to 0.05%. qTaken from Sept 28 th ESCIT presentation. qSupported by data shown today, which indicates: 1.The IIIG can be used to ensure a benefit in catalyst/emissions system protection equivalent to that which could be achieved by reducing P levels from 0.08 to 0.05% (37.5%). 2.If another method surfaces which is judged by ESCIT to be better than the IIIG in this regard, it can come forward as the preferred method. 3.ESCIT should establish a timeline for evaluating other test methods and reaching a decision on the best method available to recommend to the ILSAC/Oil Committee.

20. © Copyright INFINEUM INTERNATIONAL LIMITED 2006 19 The information contained in this document is based upon data believed to be reliable at the time of going to press and relates only to the matters specifically mentioned in this document. Although Infineum has used reasonable skill and care in the preparation of this information, in the absence of any overriding obligations arising under a specific contract to supply goods or services,: no representation, warranty (express or implied), or guarantee is made as to the suitability, accuracy, reliability of completeness of the information; nothing in this document shall reduce the user’s responsibility to satisfy itself as to the suitability, accuracy, reliability, and completeness of such information for its particular use; there is no warranty against intellectual property infringement; and Infineum shall not be liable for any loss, damage or injury that may occur from the use of this information other than death or personal injury caused by its negligence. No statement shall be construed as an endorsement of any product or process. For greater certainty, before use of information contained in this document, particularly if it is used for a purpose or under conditions which are abnormal or not reasonably foreseeable, it must be reviewed with the supplier of such information.  Copyright INFINEUM INTERNATIONAL LIMITED 2006. All rights reserved.