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 parŽticles, and dissolved resins that E10 fuel has cleaned from the distribution system and your boats fuel tanks."
Anyone tested E10 on a pre 2007 2 stroke yam?