To Drain or not to Drain for Winter - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 19 (permalink) Old Oct 22nd, 2013, 10:35 am Thread Starter
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To Drain or not to Drain for Winter

So, it's gotten colder earlier than expected here in the Midwest
and I'll be winterizing my 749 soon.
With my monster I had previously filled my tank and added stabilizer
only to discover my plastic tank had swelled over the Winter.
Although the 749 has a metal tank I have heard that the ethanol content
can turn fuel lines into jelly over time.
My bike will probably sit 3-4 months in an unheated garage.
Is it better to just drain the tank and not bother to fill it?
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post #2 of 19 (permalink) Old Oct 22nd, 2013, 10:43 am
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You can drain the tank but you will still have small amounts of fuel in your lines/injectors and such. Stabilize the fuel, give the bike one last good run to get the stabilizer into all of the tight places then drain the tank.. Nothing good can come from four month old ethanol.

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post #3 of 19 (permalink) Old Oct 22nd, 2013, 10:58 am
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Any way you can get ahold of non-ethanol fuel?
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post #4 of 19 (permalink) Old Oct 22nd, 2013, 11:09 am
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Better to leave steel tanks full.

- less prone to rust when full
- less likely to explode when full

Non-oxygenated fuel (ie fuel without ethanol blended in) is most stable. Either fill you tank up and run this type of fuel through your bike as Chuck mentions or fill with common pump gas and add a fuel stabilizer (eg Stabil) amd run your bike till this has gone through your enitre fuel system.
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post #5 of 19 (permalink) Old Oct 22nd, 2013, 12:09 pm Thread Starter
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why would it be more likely to explode when empty??
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post #6 of 19 (permalink) Old Oct 22nd, 2013, 12:18 pm
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Quote:
Originally Posted by Count Lippe View Post
why would it be more likely to explode when empty??
Gas mixes w/ air in tank.

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post #7 of 19 (permalink) Old Oct 22nd, 2013, 1:52 pm
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I've never drained gas, oil or anything for winter storage. Didn't even do it for extended 6 month storage periods resulting from being deployed when I was still active Navy.

Add fuel stabilizer, maybe fresh oil if you have more than say 1000 miles in it. Get the battery on a tender, tires off the ground, plug the exhaust tips and intakes (if applicable) to keep the critters out, cover it and forget about it. No need (and best not to) start the thing every month or whatever.

When it's time to take it out. Do your normal pre-ride check (tires and such) and go. Running the gas with the stabilizer is no issue at all. In fact, it may run better depending on the stuff you use. I've been using Star Tron for storage and a dose every few tank fulls and it's a good cleaner / maintenance against ethanol as well as good for storage.

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post #8 of 19 (permalink) Old Oct 22nd, 2013, 2:50 pm
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Quote:
Originally Posted by Count Lippe View Post
why would it be more likely to explode when empty??
Explosion requires lots of oxygen so lots of combustion can happen in a short period of time. A full tank, minimizes the amount of oxygen available for combustion.
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post #9 of 19 (permalink) Old Oct 22nd, 2013, 7:34 pm
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Explosion requires lots of oxygen so lots of combustion can happen in a short period of time. A full tank, minimizes the amount of oxygen available for combustion.
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post #10 of 19 (permalink) Old Oct 23rd, 2013, 9:58 pm
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Quote:
Originally Posted by Count Lippe View Post
why would it be more likely to explode when empty??
When I was a teen, my dad's secondary fuel tank on his F250 lost it's bracket. Not to worry, I'll weld it for you says I. Off came the tank, rinsed with water and started to weld the bracket back to the side. Well, a single rinse with water was not enough...there was a "whoooshing" sound" followed but a small explosion. I think I increased the capacity of that tank by a half gallon! All the sides were a bit bowed out. The lesson gained on that day: gas fumes are pretty darn dangerous.

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