Coca-Cola As An Engine Cleaner?

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This is an old urban legend-although I thought they used to say to use Pepsi. Some people claim it will actually work.
 
Wasn't this on an episode of Mythbusters?
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Carbolic acid used to be readily available back when my Dad was a teenager. His Dad made him use carbolic acid to clean blood stains of the seats. Do not know why it is not available over the counter anymore?
 
We used it in the Navy to clean soap scum off shower stalls. My grandfather used it to free up a siezed John Deere tractor once too. Yes, it really does work!
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When I was in my early teens I had bad case of strep throat. I noticed Coke felt kind of good going down and seemed to clear things up a bit so I gargled with it. The Coke gargle really cleaned out the strep throat junk and made my throat feel a lot better. It was far better than anything the doctor recommended.
 
Coca-Cola, along with most other carbonated soft drinks contain both carbonic acid and phosphoric acid.

So really, any soda should work just as well as coca-cola.. in theory.
 
I'm not all that surprised. Coke is about as harsh a cleaner as you can get.

Short story. I have a co-worker of mine in Utah that was doing some testing with an automotive customer. We handle electronic components. They were working on a thermostat application and the sensor was going to be immersed in coolant. Part of the testing before they approved the thermistor was to not only make sure there were no ill effects from the hot coolant but also from any other fluids or additives someone put into their reservoir.

I'm not sure of the exact fluids tested, some acids, OTC coolant products and whatnot. In the end, the only thing that ate through the sensor and ultimately failed the test was Coca-cola.

While it may clean an engine, with today's assortment of electronics, you may want to think twice before pouring a 12 oz. can into your seized engine.

P.S. I drink water, tea and juice.
 
With Carbonic and phosphoric acids the Soda cleans and Chelates minerals. I would use it as a soil conditioner before I used it in my engine.
 
Coke syrup is still available at pharmacies to settle upset stomachs. I don't doubt coke could free a seized engine if the rings were bound to the cylinder, but there are probably better methods with fewer side effects. Here is Coke's take on the issue... Coke Myths
 
personally, i liked the pre 1920's Coke formula better....had more kick
don't know about the acid LSD but sure had the other good ingredients and was patented by the US government but not for engine repair and piston cleaning
 
A little off subject, but, I remember when my great, great, Aunt used to use WD-40 on her arthritic joints. I certainly wouldn't recommend it or say it didn't work, but, I think we should drink coke (if you choose to do so) and use WD-40 for it's intended use.
 
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its called carbonic acid.




No, it is phosphoric acid.




No, its carbonic acid (something you get when CO2 is dissolved in water). There may be phosporic acid also. Try showing your genius elsewhere.




Most of the buffer capacity in Coke and Pepsi comes from phosphoric acid. Some comes from carbonic acid but, carbonic acid is a weak buffer. Citric acid also contributes to the buffer capicity of these and other soft drinks.

None should be used to clean anything made of metal. Use products formulated for the job.

If you want to clean rusty tools, soak for an hour in hydrochloric acid (the same acid used for adjusting the pH of your swimming pool). Rinse thoroughly in water and dry with hot air followed with silicone spray.
 
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