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Originally Posted by pogo123 From Proctor and Gamble's web site:
"Question
Can I wash my car with dishwashing detergent?
Answer
Your car surface and the dirt that gets on it are a lot different from the food soils and dishes that dishwashing liquids clean effectively. We don't recommend them for cleaning your car."
When the manufacturer of the product says "don't do it" then you probably shouldn't do it. |
P&G's responses are based on protecting the company from any potential "harm" caused by "misuse" of the product.
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Originally Posted by Zet If you re-read this bit from Procter & Gamble: "Your car surface and the dirt that gets on it are a lot different from the food soils and dishes that dishwashing liquids clean effectively". You will notice that P&G are saying that Dawn isn't designed for the kind of dirt that gets on cars, it is designed to remove food soils. Anyone struggling with food soils before a detail  |
Chemically, food soils and bird soils are the same. Food grease and road oil/grime are pretty close as well.
Also, most of the hand-softning additives mentioned in the formula changes previously are not in original blue dawn.
As for me, I subscribe to the Zaino cult and do a Dawn wash 2x a year as part of the "routine" before clay/polish. I have done this on 5 cars for the past 10 years and have never had a problem. I do notice a difference from regular shampoos in that the surface feels like there is less on it (wax/oil). And I have never had a shampoo that bubbles more than Dawn (not something I look for - but mentioned early on in this thread.)
To answer the original poster's questions -
1. I find that dawn is harsher and does take more junk off the paint than most shampoos. I also don't have to order it online or get it at a specialty shop - I get mine at Acme.
2. Haven't tried anything else - most dishwashing detergents have a lot of scents and softners in them. Good old original blue has the least amount of these "doesn't help your car" ingredients that I am aware of.