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I believe that it is Hydraulic steering. The reason i ask what the difference is between a sump pump and bildge is that i have a switch for a bildge pump and a switch for a sump pump. So you dont think theres anything i could do as far as checking the oil etc. Also, is there a hook up on the engine to flush it out? because im used to boats that are trailered but this one stays on a slip out of the water when not being used so i cant get a flapper on it.