Was reading a reply on another boating forum. (non performance boaters) The original poster had purchased a new boat and had a question about continued use of Synthetic Oil like the manual recommended. Someone replied, "It wouldn't hurt since you only change your oil once a year anyway". What the hell is that about. Was he serious? Do people actually run their boat that long without an oil change?

Buck

I use to work at a Gm dealership and everynow and than a customer would come in with say 30,000miles with the original oil filter still on the truck!

Buck, it is feasable that some people might only change theirs once a year. MANY people up this way only put 50 hours on their boats a year. Remember, short season. I change mine a lot more often than that, but on many smaller boats or cruisers where the motors aren't run hard like ours are, 50 hours might not be that bad.

'Foul

I only change mine once a year and it still comes out golden.

Maybe I'm just being anal retentive?

Buck

Once a year here, but then again it only gets about 10 hrs on it in a year too

There is a really bad joke in there somewhere!!! But I'm going to leave it alone. LOL!!!!

On my first boat that had a 350 mag in, I would put about 80 hrs a year on it and only changed the oil at winterization.
Second boat with 454 mag, I would change it once about halfway through the season.
Current boat with 525SC, I run full synthetic, and change it every 25-30 hrs.

I change mine 2 times / year usually I get about 50 hour on each boat though.

Well over 100 hours, change every spring. As for running hard? Never, I only run WFO for 4 miles at a time.