Phase 2 Reformulated Gasoline

                               Performance Subcommittee





                                 Final Meeting Summary
                                      May 16, 1995






                            California Air Resources Board

I.   Introduction

     The performance subcommittee discussed the following key issues
     regarding the Phase 2 Reformulated Gasoline performance and
     compatibility testing program:

          Progress of On-Road Test Program
          Progress of the Chevron Test Program
          Progress of Off-Road Vehicle and Equipment Test Program
          Volumetric Fuel Economy
          Other Issues

     The minutes from the previous meeting, March 14, 1995, were approved
     with no changes.   Copies of presentations given at this meeting are
     enclosed with this summary.

II.  Progress of On-Road Test Program

     We are in the third month of the test program and no problems have been
     reported to date; however, the test program has changed slightly.  The
     test fleet has decreased from nearly 1,000 vehicles to just under 800,
     and the control fleet has decreased from approximately 600 vehicles
     to about 550.  A table listing the fleet composition by vehicle type and
     age is included in the attachments.  Also, the delivery of summertime
     test fuel began on May 1, 1995 rather than in March.  The program should
     not be affected due to the long winter. Fuel sampling is continuing
     and winter fuel properties will be available soon.  Over 150 samples
     have been collected.  The fuel sample properties are expected to be
     provided at the next subcommittee meeting.

     Contact: Nelson Chan  (916) 327-1510

III. Progress of Chevron Test Program

     Chevron's program has seen 4 incidents of elastomer failure in their
     Phase 2 RFG test fleet compared to none in their control (conventional
     gasoline) fleet after approximately 4months of testing.  The parts are
     being studied to determine the cause of the incidents.  Chevron's test
     program ends at the end of the month, and they expect to provide the
     results of their program at the next meeting.

     Contact: Randy Barber (510) 242-2448

IV.  Off-Road Vehicle and Equipment Test Program

     We have anticipated that UC Davis would test lawn and garden equipment
     and agricultural vehicles, and Cal Poly, San Luis Obispo would test
     tractors for the test program, but both have dropped out of the test
     program due to administrative delays.  Fortunately, CSU Fresno is
     available as a site to test the same types of equipment, and these two
     programs have been shifted to CSU Fresno.  Off-road test programs
     underway include the Portable Power Equipment Manufacturers Association
     (PPEMA), Lake Tahoe Winter Sports, and CSU Fresno.  Harley Davidson, in
     Alabama, began testing last week.  Their testing includes emissions,
     fuel economy, and durability studies.  Two other programs soon to begin
     include Tahoe Paradise Boat Rental and Mercury Marine.  To date, no
     problems have been reported for the off-road fleet.

     Contact: Kathleen Nolan  (818) 350-6519

V.   Volumetric Fuel Economy

     Additional changes were made to the ARB fuel economy paper to include
     data from Auto-Oil dynamometer testing and from the Battelle test
     program.  The paper is to be provided to the Public Education
     Subcommittee for use in future fact sheets.

     Contact: Jim Guthrie (916) 327-1508

VI.  Other Issues

     The ARB is sponsoring a research program to collect ambient air quality
     data for hydrocarbons in an attempt to allow the direct quantification
     of the benefits of the Phase 2 RFG regulations.  The results are
     expected to be available in 1997.

     In 1992 and 1993 some fuel leaks occurred in Nissan Maximas with over
     100,000 miles.  Nissan reported that the leaks were associated with high
     MTBE concentrations up to 19%.  In an attempt to find the cause, Nissan
     reproduced the failure symptoms with a 15% MTBE fuel in a controlled
     test that duplicates 100,000 miles of use.  Note that Phase 2 RFG will
     be oxygenated with about 11% MTBE when MTBE is the oxygenate used.

     A draft of the Phase 2 RFG test program report outline is expected to be
     completed and made available for review and comment by the next meeting.


Attachments

CBG Program Advisory and Subcommittee Activities