I siphon the gas out of my 89 BMW K100 if the fuel has been in the tank for several weeks and yes I do use a gas additive. I try to avoid alcohol related issues. Have been using a manual siphon device. It works ok but not real fast. Recently was at Harbor Freight and saw a battery operated pump. Price was cheap and thought I would try it out. So far it works great and it is fast. Just thought some of our members might be in need of something like this. Just would like to add I dump the old gas into my KLR as it's not too sensitive to gas quality. ken in katy.