Re: new boater
I have a volvo with a similar engine. The volvo engine your talking about has two cooling systems, it has a closed or(freshwater) cooling system, and also a sea water cooling system. The sea water cooling system sucks water in from the lake or river and runs it up near the exahust manifolds to cool the engine that way. I am not an experienced boater myself so if there are any mechanics out there, correct me if I am wrong. About pulling a tube, it will be fine, I have a 19' bayliner with a 2.3L volvo, and it pulls tubes fine.