Thread: Diesel vs. Gas
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Old 09-08-2011, 06:47 PM   #12
Nomad Willy
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RE: Diesel vs. Gas

DavidM,

How much less efficient are 4 stroke OBs than gas inboards? As I see it the OB is less efficient for two reasons. Sea water cooling that necessates running the coolant 130 degrees or less and relatively small props. The prop has other + and - features also.

What do you think David?
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