Don't go platinum plating anything in your system though, Platinum has a catalytic effect in the presence of alcohol vapour and heats up and glows red. You should be able to imagine how this would not be a good thing. Aluminum is also reported to work as a catalyst when dry steam and hydrocarbons are present, allowing cracking of the hydrocarbons and releasing free oxygen and hydrogen. This happens at temperatures above 100C I think, however, if you ever forget to turn your pump on one day, it's not nice to imagine that there's a slight chance you might take out half the block instead of just your CPU.
I keep coming across that "there's oil in rubbing alcohol" thing and I beleive there might be some confusion between types of rubbing alcohol. There is the green stuff that clearly states that it contains wintergreen oil, you obviously don't want to go using this as a contact cleaner or whatever, but the pure white stuff, at 70% USP, never has shown any signs to me of even having a trace of oil in. However, I think the particular type of alcohol here is not very nice to anti-reflective coatings, which is a very big reason why you would not want to use it as an optical cleaner. If however you clean uncoated glass with it, you will see it leaves it smear free, allowing some of the 70% USP stuff to evaporate from a puddle on a mirror will leave almost no trace, except what dirt it may have adsorbed from the surface of the mirror, definitely no oily residue. *shrug* So I never beleive it when I hear that, because there ain't no oil in the stuff I get.
Road Warrior
edit:
Oh by the way, when I get a really crappy tank of gas, I go get one of those quart bottles of rubbing alcohol and pour it in. Improves the octane rating. For 5 bucks or so you can go and buy a bottle of "fuel injector cleaner/ carburettor cleaner " that is half the size and is mainly, guess what, isopropyl aclohol.