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Very good and detailed response. I do have a few questions.
With regards to burning off any deposits, I can understand this with regards to cars because they tend to cruise at, say, 2000 rpm on the highway. I have gunned my cars every so often in order to remove any deposits, and notice that the engine runs better afterwards (although this is not scientific, just my perception). On the other hand, when outboard motors - whether 2 stroke or 4 stroke - cruise around at 4,000 rpm, then that should be way more than enough rpms to burn any deposits. Am I wrong?
With regards to water/humidity in the oil, I understand that revving the engine to WOT helps heat up the oil and thus burn any humity/water. However, wouldn't it be just better to change the oil during shorter intervals?
With regards to making sure than a propeller is the right size/pitch, I also understand that point as well. However, shouldn't the dealer, who sells that brand of boat, with that brand of engine, and thus that size/pitch of propeller, know the proper size/pitch so that you don't need to push your new boat at WOT? Honda and Yamaha, for example, have detailed performance figures for many types of props on the same boats. That way you know exactly what the figures will be with particular props.
Am I wrong on any of these issues?
Thanks,
Zachary
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