Re: When do refineries stop making "winter" gas?
Benson as noted in PM, here are the 3 scans of the volatility requirements in ASTM D 4814. Tables 1 and 3 are used to identify the volatility specified in Table 4 for each month and region. Keep in mind that high vapor pressure = increased vaporization (good in winter, bad in summer)and high T20 V/L = best vapor lock protection. Contact me with questions/comments.
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