Outboard. Running the carb dry.

[CLB]

just googled ethanol free petrol...
got this site https://www.esso.co.uk/fuels-faqs
which says:
What is the ethanol content of your fuels?


The majority of unleaded 95 Octane petrol sold in the UK contains up to 5% ethanol as required under the Government’s Renewable Transport Fuels Obligation (RTFO).

There is currently no requirement for renewable fuel (such as ethanol) to be present in super unleaded (97 grade petrol).

Esso super unleaded petrol (Synergy Supreme+ Unleaded 97) is ethanol free (except in Devon, Cornwall, the Teesside area and Scotland). We would therefore advise anyone who has concerns about the presence of ethanol in petrol to use Synergy Supreme+ – providing they do not fill up in Devon or Cornwall, the Teesside area or Scotland.


also found this


https://www.bp.com/content/dam/bp-country/en_au/media/fuel-news/fuel-octane-power.pdf
which says:
BP ULTIMATEBP Ultimate is the highest octane retail fuel that BP has on the market. It has an octanerating between 98 and 100 and does not contain ethanol. It is suitable for all cars but pre1986 vehicles designed for leaded fuel may need to add an additive to prevent valve seatrecession if they do not have hardened valve seats. BP Ultimate also contains a high dose ofadditive to protect the fuel system and to remove deposits that foul intake valves and thecombustion chamber causing poor combustion and knock.

Thanks for that. The BP statement is 8 years old, but the Esso website SHOULD be up to date. Maybe Esso Supreme is the way forward as I am not in Devon Cornwall, Teeside or Scotland. (I wonder why those areas in particular) I will look into a little further as I thought Ethanol free fuel was a thing of the past and will be a happy bunny if I can still get it.

 

[wombat88]

Thanks for all your comments (I am the OP). To be honest I am now vaguely confused but will adopt the 'why not' approach to draining the carb.

 

[Boathook]

Honda 4t. Run it dry every time. Why not?

I do the same unless the engine is in regular use such as on holiday.