Hi Mody,

Further to the advice from Campgems. No it won't matter if part of the fuel form the models tank goes back into your bulk fuel container. What is important is to run all of the fuel out of your motor to ensure there isn't any residue of methanol to attract moisture or nitro to start corrosion. When your finished for the day hook up your glo driver and at a fast idle run your motor until it runs dry.

Cheers,

Colin