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Old 08-04-2019, 12:25 AM   #13
kapnd
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City: hawaii
Vessel Name: #31
Vessel Model: ex-Navy MUB 50 fish/cruise
Join Date: Aug 2013
Posts: 873
Seaboard Marine offers Tony Athens version of a no nonsense CCV system, made with Cummins motors in mind but easily adaptable to most motors.
It works very well, and does not have any moving parts, nor does it return gunk to the crankcase.
For those that are loosing excessive oil out of the crankcase, I’d suggest that they could be overfilling the oil, basing their oil fill level solely on the dipstick marks.
My Cummins 6 BT takes 13 qts to fill to the full mark on the stick, however it will expel a quart through the breather over a few days running, then when it hits 12 quarts, it stabilizes, no longer expels oil, and runs quite cleanly.
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