146. A Roots-blown, two-stroke cycle main propulsion engine on the fishing factory ship to which you are assigned is emitting excessive bluish-tinged smoke from the stack. Further investigation reveals excessive lube oil consumption. What condition would most likely account for this?

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worn blower rotor shaft seals

146. A Roots-blown, two-stroke cycle main propulsion engine on the fishing factory ship to which you are assigned is emitting excessive bluish-tinged smoke from the stack. Further investigation reveals excessive lube oil consumption. What condition would most likely account for this?

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