Test Monitoring Center Report to the Mack Test Surveillance Panel June 18, 2007 Miami, FL

T-8 Reference Oil Testing Summary T-8 Test Activity Low Labs: 3 active, 2 calibrated Stands: 4 active, 3 calibrated TMC 1005-2 is now the reference oil

T-11 Reference Oil Testing Summary T-11 Test Activity Low Labs: 4 active, 3 calibrated Stands: 5 active, 4 calibrated Oil 820-3 has been introduced

T-11 Reference Oil Update TMC 820-3 9 tests 8 passes, 1 fail (mild on Soot at 12) 10th test is currently running TMC requests conference call

T-12 Reference Oil Testing Summary T-12 Test Activity Low Labs: 6 active & calibrated Stands: 9 active & calibrated

T-12 Reference Oil Testing Summary Test targets may need updating N = 24 Sure to require significant discussion CLW issues from matrix Boost spec Oil supply

T-12 Reference Oil Summary Oil 821 (PC-10E) TMC supply is exhausted Waiting on reblend from supplier Target delivery to TMC is late June Labs may be caught short of oil

T-12 Reference Oil Summary As necessary TMC will Use oil 820-2 Use calibration extensions

ADDENDUM: Comparison of T-10A and T-11A MRV (cP) Results Oil Test N Mean Std. Dev. 820-2 T-11A 89 15360 1355 T-10A 51 13154 584