1. © The Lubrizol Corporation 2006, all rights reserved Case Study: Sequence IIIG Phos Retention at 20 Hours Presented to ESCIT February 2007 San Antonio, TX

2. © The Lubrizol Corporation 2006, all rights reserved 2 Summary Analysis of Percent Phos Retention at 20 Hours in IIIG –Less Complication and Opportunity for Error than EOT –Analysis Performed on Submitted Reference Oil Data Excellent Oil Discrimination –Better than Other IIIG Parameters (Reference Oils)

3. © The Lubrizol Corporation 2006, all rights reserved 3 Calculation of Phos Retention on Reference Oils Sequence IIIG Test at 20 Hour Drain –PR20 = (Ca 0 / Ca 20 )x(P 0 / P 20 ) –Less Complication by Removing Oil Fill Factor –Removal of Variability Due to Measurements at Oil Fill –Due to Measurement Error in Elements PR>1 is Possible Reference Oil Data –149 Submitted Results by Labs A, B, D, F, G –Three Reference Oils TMC 434, SAE 5W-30, ~0.08 P TMC 435, SAE 5W-20, ~0.08 P TMC 438, SAE 5W-20, ~0.10 P

4. © The Lubrizol Corporation 2006, all rights reserved 4 How Good is the Discrimination? Model PR = f(Oil) with Lab as Random Effect –Repeatability and Reproducibility Repeatability s = 0.0212 and r = 0.06 Reproducibility s = 0.0217 and R = 0.0614 –8 Unusual Observations from Model: NONE Removed LS Mean 434 = 0.7721 LS Mean 435 = 0.8552 LS Mean 438 = 0.7982 Discrimination as Calculated by: – D(Oil1,Oil2) = ((Difference in LS Means) / R) D(434,435) = 1.3534 D(434,438) = 0.4251 D(435,438) = 0.9283

5. © The Lubrizol Corporation 2006, all rights reserved 5 How Good is the Discrimination? EXCELLENT By Comparison to Other IIIG Test Parameters –Percent Viscosity Increase D(434,435) = 0.3500<1.3534 D(434,438) = 0.1375<0.4251 D(435,438) = 0.4875<0.9283 –Average Camshaft plus Lifter Wear D(434,435) = 0.0181<1.3534 D(434,438) = 0.6866>0.4251 D(435,438) = 0.6685<0.9283 –Weighted Piston Deposits D(434,435) = 0.4151<1.3534 D(434,438) = 0.5788>0.4251 D(435,438) = 0.1637<0.9283

6. © The Lubrizol Corporation 2006, all rights reserved 6 How Good is the Discrimination Capability?

7. © The Lubrizol Corporation 2006, all rights reserved 7 How Good is the Discrimination Capability?

8. © The Lubrizol Corporation 2006, all rights reserved 8 Conclusion Percent Phos Retention at 20 Hours in IIIG –Easy to Calculate –Excellent Oil Discrimination among Reference Oils –Without a Doubt the Best Discriminator of Reference Oils Compared to Other IIIG Parameters