If using vinegar is bad, how comes you've not said anything before?

People have been purchasing Thermochill rads because of their performance, yet no-one from Thermochill (that I've seen) has posted saying that cleaning with vinegar will damage your radiator.

Marci:
If anything, vinegar after-effects would (should) result in black deposits rather than white deposits...

Kurz:
Black deposits is from the chemical reaction of the Vinegar actually eating away at metal.
Yet if Kurz is telling the truth, you are still not telling people that it will damage the radiators using Vinegar....Why Not?


Cheers,
Cool_Dude

If I need to be corrected feel free, but this is just what im thinking right now....