From:	Jeff Clark
Sent:	Thursday, December 02, 2004 3:29 PM
To:	Bill Buscher (E-mail); Bill Larch (E-mail); Campbell, Bob; Cathy Devlin; charlie.passut@aftonchemical.com; Dan Pridemore; Dick Patrick (E-mail); Floyd Albert; Glen Fetterman; Greg Shank (E-mail); James Gutzwiller; James Matasic (E-mail); Jeff Clark; Jim McGeehan; Jim Moritz (E-mail); Jim Rutherford; Jim Wells (E-mail); Joe Franklin; John Heagelin; Ken Goshorn (E-mail); Mark Cooper; Matt Urbanak (E-mail); Michael Minotti; Mike Zaiontz (E-mail); Norbert Nann (E-mail); Riccardo Conti; Ron Buck; Scott Harold; Scott Richards (E-mail); Stacy Bond; Steve Kennedy; Tom Boschert (E-mail); Tom Franklin; Warren Totten (E-mail); Wim Van Dam; Pat Fetterman (E-mail)
Subject:	Minutes of the MACK SP December 2, 2004 Teleconference
Attendance - Wim van Dam, Jeff Clark, Greg Shank, Scott Richards, Jim Moritz, Tom Franklin, Jim Matasic, Bob Campbell, Jim Rutherford, Phil Scinto, Riccardo Conti, Joe Franklin, Ron Buck.

Wim van Dam opened the meeting with some words of appreciation for all the efforts that Jim Rutherford has given the panel regarding T-10 correction equations. 

Action Items from Nov. 22 Meeting - 
Bearing Analysis - Ron Buck has sent a set of bearings to Lubrizol. Jim Matasic indicated that he expects some results within a week. Ron also sent a set to Dana. 
Correction Equations - Jim Rutherford has updated (attached) as requested.
Correction Factors - Jeff Clark distributed a spreadsheet (attached) with correction factors for both lead parameters.

Correction Equations - The correction equations have been in place for the two most recent references. The corrected results appear to be more severe than expected.  Jim was asked to update the presentation, which he reviewed, using only operationally valid data. Jim felt that v9.2 did not represent a big change from v9.1. (Please note it is v9.0 that was put in place in September.) Jim indicated that either approach was OK provided that we don't continually revise the equations with each reference test. Jim believes that a 'straight' correction factor has some problems with the effect of variability in the range that we are talking about as well as the potential impact of outlier screening on main bearings. It was agreed that only the operationally valid data be used (i.e. v9.2 of the correction equations). The question was raised as to why we are not considering the use of a correction factors instead of correction equations. Wim pointed out that using the equations allows us to side-step the main bearing outlier issue, while a correction factor will force us to address main bearing outliers. Greg stated that he was more comfortable with the data used to generate equations (includes candidate data) than just the 5 reference data points. Joe Franklin was asked about the results of the IR workshop since IR directly affects the 250-300 PB data. Joe stated that issues between labs have been examined and have not explained the differences in measurements. Differences in dilution practices are being resolved and a new experiment between the labs will begin shortly. Joe believes that there is still some more room for improvement and the group will continue working on the measurment. After much discussion, it was moved to change the equations from v9.0 to v9.2 (Rutherford, Shank) effective with all tests that EOT on or after 12/3/04; it is understood that the equations will be used to establish test stand calibration and laboratory SA status. The motion carried 7-0-2. The TMC will issue an Information Letter to distribute the change to the test method. The next question to address is how often, if ever, to update the correction equations. The group decided that the next result would be discussed by the SP regardless of its value.

Cleaning Solvent - It was moved (Clark, Moritz) that for all Mack test methods (T-8 through T-12) that the cleaning solvent requirement of ASTM D235 apply only for aromatics content, flash point, and color; and that labs must obtain a Certificate of Analysis for each batch of solvent. This motion passed 9-0-0. The TMC will issue Information Letters to distribute the changes to the test methods (note: T-12 will be updated with the next draft).

Next Meeting - will be tied to the HDEOCP meeting in San Antonio in mid-January.

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