Does your fuel/water seperator have a clear bottom bowl? If it does, check it frequently. If you find water in there, you can drain it off. If it does not have a clear bottom bowl, you should probably dump out the filter after the first couple of trips to see what its collecting. Keep in mind that a fuel/water separating filter can only hold so much water! If it gets full of water, the water will start going out to your motor. So it does need to be checked now and then. After a while, you'll get a feel for how much of a problem you have and what else you might need to do.
As far as changing the filter is concerned - on an older system where you just started to use E10, you never really know how long you can go before the filter needs to be changed. If I were in your position, I'd carry a spare filter on the boat and change it only if it starts to get clogged or at the end of the season. It may be ok for a long while and it may not.
I mix E10 and the non-E10 lake gas all the time with no issue and I have read statements from oil companies that mixing MTBE and E10 is not a problem. (If it was, I would think all the cars would have problems too)
Ken
|