I'm pretty new to this myself and haven't yet setup too many industries(only lumber and log) but, when you lay an industry track...using the '?' in the object tab will tell you what type of product the industry produces/consumes. Then when you pick a wagon/flatbed/tanker etc...if you see a 'IND' logo in the viewer while you look, that will mean that 'that tanker' is compatible with your industry. Once you add that tanker to a piece of track, again using the '?' in trains tab will show you and allow you to setup what product the tanker carries.
Hope this helps...
Mart.