1. Preliminary C13 - Exploratory Analysis Todd Dvorak 10/07/05

2. C13 Exploratory Analysis Analysis Outline: –Cylinder Combination Evaluation –Operational Parameter Study –Weighting factors for AWD Parameter Postponed - until Lab F data is available

3. C13 Exploratory Analysis Analysis Outline: –Cylinder Combination Evaluation –Operational Parameter Study

4. C13 Exploratory Analysis Cylinder Combination Evaluation –Examined All Possible Combinations –Selected the best - common cylinder group configuration (Cylinders 2346) among all critical wear/deposit parameters No discrimination between reference oils for ALSCI or AWD for cylinder groups 123456 or 2346.

5. WD by Cylinder & Group Average

6. WD Parameter Analysis by Group Avg. All Cylinder DataCylinders 2346 Significance of Labs & Oils for Cylinder Averages 123456 & 2346

7. ATGC by Cylinder & Group Avg.

8. ATGC Parameter Analysis Significance of Labs & Oils for Cylinder Averages 123456 & 2346 All Cylinder DataCylinders 2346

9. ATGC Parameter Analysis All Cylinder Data Cylinders 2346 Multiple Comparisons* of Oils for Cylinder Averages 123456 & 2346 * Note: MC based on actual means

10. ATLC by Cylinder & Group Avg.

11. ATLC Parameter Analysis Significance of Labs & Oils for Cylinder Averages 123456 & 2346 All Cylinder DataCylinders 2346

12. ATLC Parameter Analysis All Cylinder Data Cylinders 2346 Multiple Comparisons of Cylinder Averages 123456 & 2346

13. TGF by Cylinder & Group Avg.

14. TGF Parameter Analysis Significance of Labs & Oils for Cylinder Averages 123456 & 2346 All Cylinder DataCylinders 2346

15. TGF Parameter Analysis Cylinders 2346 Multiple Comparison of Oils for Cylinder Average 2346

16. ATLHC by Cylinder & Group Avg.

17. ATLHC Parameter Analysis Significance of Labs & Oils for Cylinder Averages 123456 & 2346 All Cylinder DataCylinders 2346

18. ATLHC Parameter Analysis All Cylinder Data Cylinders 2346 Statistical differences between Oils for Cylinder Averages 123456 & 2346

19. ALSCI by Cylinder & Group Avg.

20. ALSCI Parameter Analysis Significance of labs for Cylinder Averages 123456 & 2346 All Cylinder DataCylinders 2346

21. C13 Exploratory Analysis Analysis Outline: –Cylinder Combination Evaluation –Operational Parameter Study

22. Operational Variables Affecting AWD

23. Operational Parameter Study AWD (C123456) Regression Analysis –Oil Gallery Pressure is statistically significant

24. AWD by Oil Gallery Pres. & Test Lab

25. Oil Gallery Pressure by Test Lab Lab D Lab A Lab G Lab B Lab F