Have a few specific questions about grease usage - hope to learn from the elders:

Which grease would you use on fuel line threads?
Which grease would you use on wheel nuts - if any?

By grease I mean anything from lubricant to anti-seize to locking compound.

If anyone had a list of general grease usage guidelines, that would be great.
I have a tube of copper grease, is this generally a good choice?

 

I assume your replacing the fuel filter? If you live in a region that uses salt and other corrosive chemicals, I would lightly use regular grey anti-seize, otherwise I wouldnt use anything there.
On the wheel lug nuts, you will get alot of mixed reaction on that. My opinion is that if the nuts are torqued properly to spec (read: not slammed on by an ape with an impact gun) then anti seize is not needed.

 

Never use any grease on either.
Fuel will eat through most things unless they are specifically designed for it. If the fuel eats through the grease, you will have a gas leak.

Never put grease on the lug nuts. They are torqued to spec with dry threads. If you wnat to prevent the wheels from rusting to the the hubs, put anti-sieze on the hub face between the lug nuts.