Buildcraft tutorials continued

Here are those other two Buildcraft tutorials I mentioned a few posts back ...

Buildcraft #4: waterproof pipes
How to make waterproof pipes, and examples of pumping fluids from machines to tanks.

Buildcraft #5: pumps & tanks
Here's an exampe of setting up a Pump to pump a little oil slick into a tank.

I hope these help you to understand the logic of Buildcraft.  It's well worth knowing, as it opens up a whole new category of automated things to build.