The green arrows point to the copper tube that carries exhaust gas to the metering valve shown by the red arrow. This tube has a small flow restrictor, about 3/32" hole, to create a slight vacuum in the line and slow down the volume of vacuum air. The raspberry or Burgundy colored arrows show the oil feed system that takes oil from the bottle and meters into the air stream. The orange arrows show the line filled with oil/exhaust gas being drawn to the GEET reactor.

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