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Old 02-20-2016, 10:19 PM   #9
markpierce
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City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
Change oil once a year, during which I operate about 125 hours for about 35 days, for three to eight hours at a time, normally operating two to three times a month. Allow fifteen minutes to bring up engine temperature before running at cruise speed. ... Makes we wonder how often boat owners change their boats' engine oil when they hardly ever operate their boats.
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