Your girlfriend may be smarter than you think. It seems she has caused as much angst as if she had actually ruined your engine. Why? It's a myth!

Do you know anyone, personally, that had their engine ruined by sugar? It doesn't happen. Sugar is water soluable. It stays in granular form in petroleum products like gasoline. It won't get past even the simplest filter. Even if it did, sugar is a weak crystal and wouldn't cause harm like sand or carbon would.

Here's some proof. www.snopes.com/autos/grace/sugar.asp

Sleep easy. Clean the granules out of your tank and put this whole thing behind you. Your bike has many happy miles left in it.