Performance Subcommittee
                Meeting Summary December 1, 1995

Introduction

          The performance subcommittee discussed the following key
     issues regarding the California Reformulated Gasoline (CaRFG)
     performance and compatibility testing program:

          On-Road Test Program
          Off-Road Test Program
          State Fire Marshal Data
          Other Issues

     Copies of presentations or materials given at this meeting
     are enclosed with this summary.

II.  On-Road Test Program

          Ford completed its analysis of the fuel pumps from the
     ARB and Texaco test programs and provided the ARB with their
     findings.  Ford's analysis of these fuel pump incidents was
     discussed by the subcommittee.  In the ARB test program, the
     vehicle with license plate number 2F49402 had a reported fuel
     pump failure; however, Ford's analysis of the fuel pump
     showed that it operated properly.  The subcommittee agreed to
     remove that incident from the "fuel" pump category and to
     place it in the "other" category.  Further, one other fuel
     pump from the Texaco Test Program was found to be in
     appropriate operating condition and that issue will be looked
     at by Texaco.

          The General Motors bench testing is complete for the
     fuel system plastic materials and about 60 percent complete
     for the fuel system elastomers (further details of the status
     of the GM bench testing are attached).  The final plastic
     material tested was a foamed nitrile float material used in
     older vehicles.  Samples of this foam material were exposed
     to three CaRFG blends and two conventional fuels.  The volume
     and density changes observed for these samples indicate no
     changes that would affect its performance.  Since the last
     update, one more fuel system elastomer, a nitrile rubber, was
     completed on the three CaRFG fuels and in the Auto/Oil fuel
     RFA.  In the previously reported elastomer tests, the
     material samples were exposed to the test fuel for 500 hours
     then to low aromatic fuel for another 500 hours to simulate
     exposure of "used" elastomers to a low aromatic CaRFG
     formulation.  The elongation results of this severe test
     indicate that the nitrile rubbers are unsatisfactory for high
     flex applications for all fuels tested -- conventional and
     CaRFG fuel.  However, most vehicle manufacturers made
     material improvements in the early 1980's and the likelihood
     that nitrile rubbers are still in use is minimal.  In the
     less severe reflux tests the elongation results in CaRFG
     fuels were more favorable than those of the conventional RFA
     fuel.  Overall, these results indicate no real differences
     between the CaRFG fuel and the conventional RFA fuel.  The
     results are discussed in more detail in the attachment.


III. Off-Road Test Program

          The majority of the testing in off-road vehicles and
     equipment was complete in August, 1995.  The results of these
     programs, CSU Fresno, CalTrans, Lake Tahoe and Lake Cachuma
     are currently being drafted for the CaRFG report.  In these
     test programs, approximately 12,000 hours were logged on test
     fuel and about 25,000 miles on the snowmobile testing.

          Andreas Stihl conducted testing on a chain saw and a
     weed trimmer.  They reported no significant changes in
     technical parameters with the use of CaRFG; power
     characteristics and plug seat temperature were equivalent
     between CaRFG, Federal RFG and conventional fuel.
     Additionally, they found that hydrocarbon and carbon monoxide
     emissions remained unchanged with CaRFG in new engines.
     Based on testing of Federal RFG, they also reported
     difficulty starting engines using oxygenated fuels, and at
     higher ambient temperatures.

          The results from the five remaining PPEMA member
     companies are still pending.  Husqvarna's, Dolmar-Makita's,
     and Shin-Daiwa Kogyo's testing is on hold due to CARB
     certification efforts.  Homelite and Poulan results are
     expected very soon.

IV.  State Fire Marshal Data

          The State Fire Marshal maintains a database of vehicle
     fire information that they will provide to the subcommittee
     at its request.  The data contains current and historical
     information on vehicle fires with details such as where in
     the vehicle the fire started, the likely cause of the fire
     and detailed vehicle information.  One of the uses of this
     data is to see if the rate of vehicle fires changed with past
     gasoline regulations.  Furthermore, the Fire Marshal will be
     able to identify vehicles prone to fires and monitor if there
     are any increases in fires during the change to CaRFG.

V.   Other Issues

          The ARB received a letter from the "Seep Subgroup" of
     the Technical Review Panel regarding their assessment of
     seeps.  The subgroup consists of members from the  domestic
     auto manufacturers and headed by Loren Beard, Chrysler.  The
     subgroup inspected vehicles in the ARB test program on both
     the test and control fuel and some vehicles in the Detroit
     area.  They conclude that seeps "do not represent an abnormal
     condition" and further recommend that seeps be removed from
     further consideration in the test program.  (The letter is
     attached.)

          The CaRFG report will be ready for approval by the
     subcommittee at the next full subcommittee meeting in
     February.  We are planning to have a smaller meeting for
     those who are interested in commenting on the report, in
     mid-January, before presenting it to the full subcommittee.

          On a side note, ARCO and Ultramar are proposing to
     conduct a fleet test program to further study the effects of
     a CaRFG oxygenated with ethanol prior to the 1996 winter
     season.  The concept is still in its preliminary stages.

Attachments

CBG Program Advisory and Subcommittee Activities