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This paper is the fourth and final paper in a series providing fuel blending and analysis data for the Auto/Oil Air Quality Improvement Research Program (AQIRP), essentially detailing the work of the Fuels Blending Subcommittee (FBSC) and portions of the work of the Fuels Analysis Subcommittee (FASC). This paper covers fuels for the final follow up projects in Phase II. Blending procedures, feedstock preparation and analytical techniques are explained, and blend recipes, full physical properties and compositional data are given. In addition, a survey of commercial gasolines carried out in cooperation with the MVMA (Motor Vehicle Manufacturers Association) is reported. Regional and national fuel sampling and subsequent derivation of composite fuels is explained briefly, and fuel analysis data produced by the FBSC are presented. Papers by Pahl and McNally (1)*, Gerry et al. (2), and Kopp et al. (3), have presented the corresponding data for the forerunning Phase I and II AQIRP work.

This paper is the third in a series providing fuel blending and analysis data for the Auto/Oil Air Quality Improvement Research Program (AQIRP). Preparation methodologies, analytical techniques and fuel property data are presented for the Heavy Hydrocarbon/Volatility study and other programs not previously reported. Papers by Pahl and McNally (1)* and Gerry et al. (2) have presented information on the fuels of the AMOT (Aromatics, MTBE, Olefins, T90), Methanol, RVP/Oxygenate and Phase I and II Sulfur programs. The Heavy Hydrocarbon/Volatility fuel study was initiated in an effort to better understand the 90% distillation point (T90) effect observed in the AMOT matrix of Phase I. The study was comprised of two matrices and twenty-six fuels. The first eighteen-fuel matrix, designated as the “A” matrix, investigated the effects of medium, heavy and tail reformate and medium and heavy catalytically cracked components.