When may the crankcase ventilation pipes or oil drain pipes of two or more engines be connected?
Propulsion engines under 1000 shaft horsepower may share a common crankcase vent provided the oil drains remain separate.
In most cases it is desirable and cost effective for propulsion engines to share a common crankcase ventilation and monitoring system.
No interconnection may be made between the crankcase ventilation pipes or oil drain pipes.
None of the above are correct.
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