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All of the components in gasoline have octane, some are high some are low. MTBE was very high octane but is now illegal (shows up in ground water samples even from exhausts and outboard motors in lakes). It's all about getting the right combo of ingredients (up to 13 at times
) to have the tank samples come out at exactly 87.0 or 93.0. Doesn't sound tough until you realize that we're putting all the components in at one time and that we make over 220,000 barrels (42 US gallons = 1 barrel) per day. That doesn't include blending Jet fuel, Low Sulfur (on road) diesel, off-road diesel, and 6-0il (heating oil). We keep track of the quality during the blend with in-line analyzers and lab samples serve as back-up.
All of the components in gasoline have octane, some are high some are low. MTBE was very high octane but is now illegal (shows up in ground water samples even from exhausts and outboard motors in lakes). It's all about getting the right combo of ingredients (up to 13 at times
