Is this 737 venting fuel?

[vc-10]

In this pic of a Virgin Blue 737-800, there seems to be a streak of white stuff coming out of the vent on the bottom of the wing. Is this fuel?

http://www.airliners.net/open.file/1269686/L/

[TCAS_climb]

To the best of my knowledge 737s can't dump, but the vent should be in that area of the wing tip.


http://www.smartcockpit.com/plane/boeing/B737/

[Desert Rat]

In this pic of a Virgin Blue 737-800, there seems to be a streak of white stuff coming out of the vent on the bottom of the wing. Is this fuel?

http://www.airliners.net/open.file/1269686/L/

Looks like fuel, it happens when the tanks are filled up at full capacity and with the A/C motion during pushback or taxi,some fuel can end up in the vent boxes....this is sucked out when the A/C is taking off or flying....

no big deal.