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timppu: I keep hearing that normal dishwashing liquid is a definite no-no for cars. I don't remember the details, maybe it removes the wax too or something, making the paintjob dim fast.

I'd still suggest using car shampoos intended specifically for cars.
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Ubivis: Never heard of it. Learned it from my father who is doing it for more than 30 years now. And his car is looking the best in the whole neighbourhood :)
First hand, seriously, I messed up my Benz with washing up liquid and ended up getting the whole thing resprayed. For two years I wondered why the wax wouldn't stay and wasn't protecting the car, didn't even think it could be the liquid. Sure enough, I've stopped using it, and the issues with the wax have stopped too.
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Ubivis: Never heard of it. Learned it from my father who is doing it for more than 30 years now. And his car is looking the best in the whole neighbourhood :)
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MonstaMunch: First hand, seriously, I messed up my Benz with washing up liquid and ended up getting the whole thing resprayed. For two years I wondered why the wax wouldn't stay and wasn't protecting the car, didn't even think it could be the liquid. Sure enough, I've stopped using it, and the issues with the wax have stopped too.
Maybe your liquid was too agressive? We do have wahing liquids that you can use to wash your hands :)
It depends on chemicals used in your dishwashing soap. I use hair shampoo, and I never had any issues. I'm not sure about waxing it after it though.
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IronStar: It depends on chemicals used in your dishwashing soap. I use hair shampoo, and I never had any issues. I'm not sure about waxing it after it though.
I didn't mean waxing it after. I meant the liquid strips the wax, exposing the paint to day to day wear and tear.
My guess is that all depends on original paint quality. My dad drives 1999 Skoda Felicia with almost 300k km in wheels, and he doesn't even bother to wash it regularly, but it still looks quite good.
Mine is an '04 CLK320 AMG. I don't know what "quality" paint it came with, but I assume it's pretty good.
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timppu: I keep hearing that normal dishwashing liquid is a definite no-no for cars. I don't remember the details, maybe it removes the wax too or something, making the paintjob dim fast.

I'd still suggest using car shampoos intended specifically for cars.
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Ubivis: Never heard of it. Learned it from my father who is doing it for more than 30 years now. And his car is looking the best in the whole neighbourhood :)
See this thread on a car enthusiasts forum:

http://www.pistonheads.com/gassing/topic.asp?h=0&f=23&t=538730&mid=0&i=0&nmt=Washing+up+liquid+ok+for+washing+car%3F&mid=0
Must be a regional problem. We don't have these problem here in good ol' germany :)
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Ubivis: Must be a regional problem. We don't have these problem here in good ol' germany :)
In other words - our washing up liquid is better than yours! :D
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Ubivis: Must be a regional problem. We don't have these problem here in good ol' germany :)
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Crispy78: In other words - our washing up liquid is better than yours! :D
or the other way round ;) Ours are much more advanced ;)

http://www.youtube.com/watch?v=M3lj1_C21uY
Post edited August 15, 2012 by Ubivis