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Old 05-30-2019, 11:47 AM   #63
Island Cessna
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Join Date: Feb 2011
Posts: 305
Fuel Contamination

My suspicion is that the purpose of the slot in the neck was to create a vented cap. The slot ends well above the deck, so it would take a bit of standing water to get in via the slot. Certainly makes the gasket superfluous if nothing else!
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