© The Lubrizol Corporation 2006, all rights reserved Case Study: Sequence IIIG Phos Retention at 20, 40, 100 Hours Presented to ESCIT August 9, 2007 Midland, MI

© The Lubrizol Corporation 2006, all rights reserved 2 Summary Analysis Performed on Submitted Reference Oil Data Analysis of Percent Phos Retention at 20 Hours in IIIG –Simple and Straightforward Calculation –Excellent Discrimination Better than Other IIIG Parameters (Reference Oils) Better than 40 or 100 Hours Percent Phos Retention at 40 and 100 Hours in IIIG –Complicated by Oil Consumption Issues –Added Variability Due to Oil Fill and Oil Fill Measurements –Phos Retention Calculation is an Approximation –Very, Very Good Discrimination Better than Other IIIG Parameters (Reference Oils)

© The Lubrizol Corporation 2006, all rights reserved 3 Calculation of Phos Retention on Reference Oils Sequence IIIG Test at xx Hour Drain –PRXX = (Ca xx / Ca 0 )x(P 0 / P xx ) –Due to Measurement Error in Elements PR>1 is Possible –It Appears that Lower PR is Associated with Higher OC 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

© The Lubrizol Corporation 2006, all rights reserved 4 How Good is the Discrimination at 20 Hours? Model PR = f(Oil) with Lab as Random Effect –Repeatability and Reproducibility Repeatability s = and r = 0.06 Reproducibility s = and R = –8 Unusual Observations from Model: NONE Removed LS Mean 434 = LS Mean 435 = LS Mean 438 = Discrimination as Calculated by: – D(Oil1,Oil2) = ((Difference in LS Means) / R) D(434,435) = D(434,438) = D(435,438) =

© 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) = < D(434,438) = < D(435,438) = < –Average Camshaft plus Lifter Wear D(434,435) = < D(434,438) = > D(435,438) = < –Weighted Piston Deposits D(434,435) = < D(434,438) = > D(435,438) = <0.9283

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

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

© The Lubrizol Corporation 2006, all rights reserved 8 Comparison of 20, 40 and 100 Hours PR20PR40PR100 LS Mean 434 LS Mean 435 LS Mean Repeatability s Repeatability Reproducibility s Reproducibility D(434,435) D(434,438) D(435,438)

© The Lubrizol Corporation 2006, all rights reserved 9 Comparison of 20, 40, 100 Hours

© The Lubrizol Corporation 2006, all rights reserved 10 Conclusion Percent Phos Retention at 20 Hours in IIIG –Simple to Calculate; No Complications –Excellent Oil Discrimination among Reference Oils –The Very Best Discriminator of Reference Oils Compared to IIIG Vis, WPD, ACLW, PR40, PR100 Percent Phos Retention at 40 and 100 Hours –Easy to Calculate, but an Approximation Due to Oil Consumption Issues –Very Good Oil Discrimination among Reference Oils