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Engine crankcase oil

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  • Engine crankcase oil

    What is the difference between 2 and 4 stroke engine crankcase oil

  • #2
    main difference would be tbn-total base number as marine 2 stroke engines usually have stuffing box..so we dont need high tbn lube for crankcase..but in four stroke liner lubrication is done by system oil so higher tbn is needed..

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