It could be crankcase oil getting pushed out. Some outboards have a hose that hooks to the bottom of the powerhead and pumps that oil back up to the top. The oil that collects will not have much gas in it, but is normally a light oily type substance.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD
AND THE PINK JEEP!!!! R.I.P.
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