97 wagon how to drain aux tank
 

I need to drain my aux tank, but there is no plug. The shop manual is vague. I tried shoving a hose down the fill tube to try and syphon it out, but I couldn't get it more than 18" down. Any clues anyone?

The reason I need to drain it, is because I failed emissions, and want to fill it up with biodeisel and re-test. I've read that can help.

Thanks!

Tony