I know @DonTheMan uses Aspen, he mentioned it here.

 

@RampantParanoia, thanks for the link.
I use Aspen 2 for my garden machinery, so just thought a few litres of Aspen 4 would keep everything nice and clean whilst the bike is just sitting there.
Good to know someone else has used this too.

Thanks again.

 

Many use Seafoam for fuel preservation but I am not sure it is available for you in your areas.

 

Seafoam is used to be a pig to source in the UK. Wayne Tripp used to recommend Mercury Powertune over Seafoam but I don't know if it has any fuel stabilising capability, it's available from boat chandlers mainly here.

Edit: should've googled first, seems Seafoam can be bought online over here now. Winner.

 

This has come up before, but I have used Stabil and it hasn't worked for me, still had to take the carbs apart and clean them out. Where I live the lay up period is generally mid/end of November until beginning of April. Best thing I have found is non-ethanol fuel. I put that in my snow blower before putting it away, it started first pull and ran perfect when I got it out of storage. I know you always have to be skeptical of things on the internet but there are some YouTube videos out there that have tested the main stabilizers out there and not many of them really work. So, if you have access to non-ethanol fuel, that's the best way to go.

 

I’d say this has been done to death with no definitive answer. This video was interesting (you have to get a minute in)

But it is worth saying that the latest e10 fuel is rubbish (in terms of life) and seems to be getting worse.

 

Way back I used 2 stroke oil a few ounces to 5 gallons and it seemed to work really well for keeping systems clean and clog free.
I now use MMO a ( Marvel Mystery Oil ] and or Stabil for keeping fuel and I have not had any issues - Always Eth Free premium - Always, as mentioned above!
That's the deal to seal it. Ethanol = ☠

 

I am not a big magic in a can - But that dang Seafoam has saved a lot of work for many people I know to clean out a clogged pilot jet.

 

Hi,
unless there is a technical reason not to drain the lines, then I would.
I would drain the carbs or injectorsb and tank and get all,of that fuel out of there.
making sure there is nothing left of the fuel, nice and clean and dry.
If there is no fuel in the system, there is nothing to fester and grow.
In the spring refill with fresh fuel.
Adding all sorts of sh!t to something that is better off out, seems Like madness to me.
regards
Peg

 

A little oil-based preservation oil is not "****", but you are entitled to an opinion.
As for draining everything - Yes, that should be done for storage, to the carbs and fuel bowls, and it wasn't mentioned. Good point brings that up. As for the fuel tank - If drained the inside had better be covered well with an oil or rust will develop.