My .02 cents worth...

Oil & filter every 100 hours. Fuel filter every 250 hrs (or every second year). transmission oil when I do the fuel filter...

Fuel filter every 200-250 hours
Oil filter every 60-80 hours, as its cheap protection. Once a year I send an oil sample for testing.
I change the transmission fluid every other oil change.

I change the oil twice a year even though I don't put the hours on the engine (if I sail locally, I probably put 20-30 hours a year on it as I am on a mooring and can pretty much sail off it).

I change it when I haul and then in the middle of the summer before I go cruising for a few weeks, since even though I don't use the engine much, the oil just sits there. Oil change is CHEAP and you can't change it enough IMHO.

I change engine oil and filter annually in the fall as part of winter storage routine. We have yet to put over 75 hours on the engine in a (northern) season even when living aboard for the entire (too short) summer. Having no schedule and no destination we just go when we can sail and try to rarely motor.

I change the trans fluid every season as well, I pump out the old stuff and then fill the trans full for the winter, then suck it down to the correct level in spring, that is how our Hurth manual says to winterize the trans, they want it left full.

I have yet to change my primary filter (the one on the engine) since we bought the boat which is when I changed everything in the fuel system and cleaned the tank. I might do it this year, dunno yet, depends if we ever get spring or not. We have two Racors, using 2 micron filters which I switch depending on what my fuel vacuum gauge tells me is going on. I know that's heresy, but there it is folks, I'm a heretic, so please spare me the "you have to use 10 or 20 micron filters in the Racor" lecture.

I might not do it that way if I lived in a hot climate but this works for me. As always YMMV.

If in doubt change it.

[QUOTE=FlyMeAway;21809]Thanks all. Can we continue to build some kind of consensus around "fuel filter every ~250 hours" and then update the guide on the Association web site to reflect this (right now it says 100 hours)

I agree that changing oil frequently is easy, and cheap protection[/QUOTE]

It could well be that each of us have different "service" environments. Like on your automobile, there are different oil change times for heavy vs. regular duties.

One size does not always fit all.

What I have found, both for our boat and from a LOT of reading on this and other boating forums, is that YOU figure out what YOUR situation requires.

Then, you write it down in YOUR logs, and go from there.

A perfect example is the change frequency of zincs on your HX. Some need to do it annually, some quarterly, and those who need to do it weekly need to find a good electrician to fix he electricity on their docks or get their neighbors to fix their boats!!! :eek::eek::eek:

I am pretty much in the same schedule as Bud. Once a year in the Fall has always been plenty for the Oil. A mechanic once told me that if you would figure comparing the engine with a car engine, including idling, you would have an average speed of 30mph. That makes 100 hrs. equivalent to 3000 miles. I don't think anyone promotes changing a car's oil more frequently than 3000 miles.