OK decided to attack the grime-black (supposed to be silver ) alloys on the Audi today.
Wonder Wheels has done a pretty good job, but one of them still has a fair bit of baked-on grime that is taking ages to shift. I've done that wheel four or five times so far, scrubbing away for hours (literally) with the little brush. It's slowly coming off and the paint underneath looks to be in good order. But ... is there anything more aggressive I can use? I'd have tried a Scotchbrite (plastic scourer) pad if I'd had one, with the Wonder Wheels.
Any other suggestions?
TIA
Wonder Wheels has done a pretty good job, but one of them still has a fair bit of baked-on grime that is taking ages to shift. I've done that wheel four or five times so far, scrubbing away for hours (literally) with the little brush. It's slowly coming off and the paint underneath looks to be in good order. But ... is there anything more aggressive I can use? I'd have tried a Scotchbrite (plastic scourer) pad if I'd had one, with the Wonder Wheels.
Any other suggestions?
TIA