Hi,
If I had my oil changed in october and its been in storage till now, Should I have it changed again before summer?

About 1/3 of us change it when we winterize the boat....the other 1/3 change it in the spring before the first run. The last 1/3 are A-holes that live in FL and don't have to worry about winter lay-ups!!! (I change mine in the fall) If the oil is clean I'd just run it unless you think it was contaminated in some way.

no.

Always change in winter before storage like you do. Gets all the chit out. Any build up of condensation that occurs before spring start will quickly burn off.

per Mel Riggs...Fondulac WI

I change mine in the fall before winterizing and then again next fall, you will be fine...

I too change mine in the Fall!!

In the fall before layup, definately. I seem to change mine alot more than most... about five times a season. I do about 60 hours of running time per season. Probably more changes than necessary, but oil changes are cheap.

I change every 30 hrs in season.

25 hrs between changes and for winter lay-up.

Good one...

I change the oil in the fall and go for one last ride before winterizing.
In the spring there should be no need to change it again.
If the engine was not run after the oil was changed, you may consider changing the filter. An empty filter could collect moisture.
As for changing intervals:
I run Mobil 1 for approx. 25hours then change the filter and top off.
Run for another 10-15hours then change the oil and filter.
This usually works out to be 2 full oil changes and 4 filter changes per year.

I run mobil 1 15-50, and usually put 40-60 hours on per season..