What causes a stain like this on stainless steel

Alto

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This was on the truck at delivery. BKF didn’t remove it. What likely caused it and how can it be fixed?
Tesla Cybertruck What causes a stain like this on stainless steel IMG_1161
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scottyah

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Looks like bird poop. There's a chance BKF can still work, try getting the area wet, applying it, spreading then waiting a couple mins before scrubbing then rinsing. That's what I do on my pans when I get some real discoloration.

Apologies if you've already tried that.
 

hridge2020

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Acid Rain ? Or Bird with Acid Reflux.

 

Gigahorse

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So, I am assuming that dog drool will need to come off prettttty quickly then.


IMG_8227.gif
lol I don't think it is as acidic as bird poop so you likely will be ok having your pooch drool out the window.
 


Warbird

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Over stimulation, obviously. What else would happen if you owned one?
 
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MARCSPSD

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Bar Keepers has a chemical reaction with the stainless. Apply and scrub. Wait a while and do it again until the stain has been "polished out".

As said above, this method cleans a stainless pan that has burned badly and is ready for the trash can.

My old stainless pans look amazing. So does my fridge! Waiting on my Cybertruck so no experience with Tesla stainless.

Don't forget the Windex!
 

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To me it looks like someone sprayed a cleaning solution a bit too close.
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