From:	Jeff Clark
Sent:	Thursday, June 02, 2005 1:26 PM
To:	Jeff Clark; Rutherford, Jim (JARU); Franklin, Tom; AJDR Andrew Ritchie@INFINEUM; Andy Broff (E-mail); Bill Larch (E-mail); Bob Campbell@AFTONCHEMICAL; Carter, Bradley  -XBCAR; Cathy Devlin@AFTONCHEMICAL; Greg Shank (E-mail); JWG Jim Gutzwiller@INFINEUM; JMAT Jim Matasic@LUBRIZOL; Moritz, Jim  -XJMOR1; Jim Wells (E-mail); Haeglin, John; Jose Gutierrez@INFINEUM; Keith Selby (E-mail); Ken Goshorn (E-mail); Cooper, Mark (MAWC); MTM Michael Minotti@INFINEUM; Pat Fetterman (E-mail); Riccardo Conti (E-mail); Ron Buck@TEI; Scott Richards (E-mail); Steven Kennedy@EXXONMOBIL; Van Dam, Wim (WVDA)
Subject:	Mack SP Minutes of June 2 2005
Attendance - Jeff Clark, Jim Matasic, Andy Broff, Bob Campbell, Jim Moritz, John Haegelin, Tom Franklin, Mark Cooper, Scott Richards, Wim van Dam, Jim Rutherford, Riccardo Conti, Greg Shank, Jim Gutzwiller, Ken Goshorn

Update on Tests and Results
Lubrizol's test has finished (ran with T-12 top ring). It had oil consumption of 24.7 g/h and finished with about 6 kg in the sump. The Soot at 12 cSt Increase was 6.6 which is 4 sigma mild. The soot was on the lower end of the windows and the injection timing was typical of their past tests. Final viscosity was 30.7 cSt and final soot was 6.9, so the oil did show signs of breakage though it was late in the test. Jim noted that phosphorus and zinc levels tapered off near eot and that this is unusual.

SwRI hopes to start this week, XOM hopes to start by Monday. Lubrizol's reference status will be pending until these other results are available. The labs were requested to run these tests to 300 hours to open up possible options for the test. The tests are to be shut down at 252 to get some eot data such as oil canister weight etc, and then move on to 300 hours. No timing changes between 228 and 252. Timing changes are allowed after 252 to hit 300 hour window of 8.59 +/- 0.60ish.

Oil Consumption vs. Hardware Analysis
Jim Rutherford's update analysis is attached. Jim Moritz supplemented the analysis (also attached). This lead to a discussion of head builds, guides, or ring date codes (changed at kit 199) potentially affecting oil consumption levels. Concern was expressed that we have not definitively answered what caused the oil consumption change. The real bottom line is that we only have one data point and we won't know where we are until the rest of the data is available.

Jeff was requested to distribute a plot showing vis vs. soot of the reference oil. The plot is attached.

Greg mentioned that the T-10 lead equations may need to be revisited. Jim Moritz requested that T-10 calibration period be put on the June meeting agenda.

Next Meeting - June 20 in Pittsburgh with ASTM.

Regards,

Jeff Clark
Staff Engineer
ASTM Test Monitoring Center
6555 Penn Avenue
Pittsburgh, PA 15206
412-365-1032
412-848-8843 (cell)
jac@astmtmc.cmu.edu