07-04-2018, 09:48 PM
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#7
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Senior Member
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,584
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Re: Leaking Oil Filler Cap
That is a flame arrester. It is part of your PCV system. More info on this thread
http://67-72chevytrucks.com/vboard/s...d.php?t=706115
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