You planning on building fertilizer plants on Mars?
You planning on building chemical manufacture plants on Mars for all of this?
Sure, why not? Maybe not immediately, but eventually. This is after all a colony. It's not a tourist resort.
What resources does Mars have that you could use to synthesize lubricants?
You can't just magically turn vespene gas into 30 weight oil to lube your engine.
Well, I don't know about vespane gas, but one can synthesize methane gas from material readily available on Mars. There's hydrogen in the water ice and carbon in the atmosphere (which is mainly CO2). If you can get methane, presumably you can get other kinds of hydrocarbons, too.
Gonna use methane gas to lube your engine?
You might not even have to synthesize it, though, since there is naturally occurring methane on Mars. It might be obtainable in sufficient quantities.
But you miss the point. Having a source of methane is a [/i]very[/i] far cry from having a source of all the other things that you would need. Right now, the chief source of lubricants is still fossil fuel sources. There are synthetic lubricants, but again we get back to the requirement for complex manufacturing infrastructure. Someone earlier mentioned 3D printing parts, but again we are looking at either petroleum-derived plastics or some other base that requires a huge manufacturing complex. And the synthesis of all these other hydrocarbons you talk about is not a simple process. Most synthesis operations require amounts of other chemicals, themselves with complex manufacturing flows. Current synthesis operations here on Earth (including for synthetic oils and the like) operate on fossil fuels for raw materials, including natural gas and coal. Seriously, take a look at the manufacturing flows for so many of the products that you need for this kind of venture. Now, figure out how many of these processes are utterly dependent upon fossil fuels. Bear in mind that for a self-sustaining Mars, you have to eliminate easy fossil fuels from the equation. Also bear in mind that if you can eliminate fossil fuels from the equation, you have solved Earth's largest problem, and if such a thing were as simple as you seem to think then it would have been done already. Hydrogenating CO2 to produce synthetic oil and fuel? Current plants use natural gas, coal or other biomass.
Still, it is entirely possible that all of these industries could be built up on Mars, along with the large quantity of personnel required to operate it all. Technically possible, at least. But the expense, that's where it gets you. Because until all this vast infrastructure is built up, and Mars becomes self-sustaining, then it will be a constant, gigantic drain of resources.
Seriously, in today's economic climate, can you honestly think of anybody that would be willing or even able to foot this kind of bill? And for what in return, exactly? How many centuries will it take for Mars to stop being a consumer and start being a producer? In the meantime, what country or mega-corp or conglomerate is in such a strong economic position that they could outflow that kind of sheer cash against such a risk? The cost of a single Mars mission, manned and with supplies, will be prohibitive; now, how many missions will it take to bring the necessary materials in order to build all this infrastructure you propose to build?
We're just not there yet, as a whole. The economic situation on this planet needs to be far more stable before we can even think of moving on to the next planet. Any colonization efforts we kick off now are doomed to be so utterly dependent upon a lifeline to Earth, that again I say you would have to be insane to even contemplate it, given the unstable economies.