Quote:
Originally Posted by Clan
i have a white car i have had for many years , i only use it occasionally so it is parked for a couple of weeks outside sometimes in a rural location .... I do wash it very regularly ... in the last year or so i have noticed that when i wash it without going anywhere since the last wash the foamy water releases black deposits in the water as the sponge is used ... no doubt this is the infamous diesel pollution which people are concerned about these days .. This has only appeared in the last year or so , none what so ever in the last decade or so ....
Be careful with TFR it stains the alloy trims on volvos !
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Reading an article a couple of months ago and the crap in the air in the cities is mainly rubber, stone dust from the tarmac and brake pad dust. Like you, i thought it would be carbon, but DPFs etc seem to have reduced that!