Eco Fuel????

[Pikey Dave]

Originally Posted by Maximus

Dont worry Boys!...WHEN the Isrialies hit Iran we'll be lucky to have ANY Friggin Petrol!

They already have! Didn't they take out a nuclear "power station" about 20 years ago? I'm sure the Scots will be happy to sell us some

[willk]

Originally Posted by tony t

Think i,l get me a sail boat then

Every now and again, I think about this option. And after some thought I decide, nah, I'll save it for an 80th birthday present to meself...

[9D280]

The biggest problem with Ethanol is not so much corrosion due to the water it entrains, but that the Ethanol itself is a lot more conductive, so rubber seals dissolving / embrittling is the least of your worries - they ar easily replaced with "Ethanol proofg" grades. It's the galvanic corrosion that's set up between dissimilar metallic components in the fuel system that's your bigger problem. It basically dissolves from the inside out, and the first you know iof it is the leak.

As said already, modern engines are designed round it essentially by making sure no dissimilar metals are used in the fuel system & the rubber bits are a suitable grade.

[C-NUMB]

Originally Posted by captnjack

The older ones, this is probably true. Anything built within the last 15 yrs is probably fine. Its not like they had 2 different types of fuel hose in the factory and switched depending on engine destination, and alcohol resistant fuel lines have been around awhile though.

I have no idea...You might be right. However Yamaha main dealers in North Europe confirms incompatibly on any 2 stroke, until 2006(or 2007 when not imported any more).

Same info on Yamaha Australia, Frequently Asked Questions - Marine Outboard | Yamaha Motor Australia
"
Are Yamaha engines compatible with E10 Fuel?
All 2008 and later outboard models have been designed with fuel system components that are tolerant to fresh fuel containing ethanol up to 10% (E10). Outboard fuel systems can still be affected by: water, dissolved gum, varnish, corrosion par¬ticles, and dissolved resins that E10 fuel has cleaned from the distribution system and your boat’s fuel tanks."

Anyone tested E10 on a pre 2007 2 stroke yam?

[captnjack]

Not sure about the older Yams, I ran E10 in a mid-80s 2 stroke Mariner with no issues. I would guess if there are going to be issues with 2-strokes it would be in HP fuel injected models and such, not the dirt simple carburated ones.

Over here 99.9% of our fuel has been E10 for nearly a decade. Before that they used MTBE as an additive (its since been phased out due to being a much more persistent groundwater contaminant than alcohols). We had many of the same fears you have now, but by and large they haven't materialized. The only really bad one has been the dissolving of some older GRP fuel tanks as mentioned earlier. The whole "phase seperation" thing doesn't seem to happen around here. Maybe in some part of the country with a shorter boating season and longer off-season layup its an issue (Wisconsin, Michigan, Maine, etc)