Darkstar752
New member
Interesting. Thanks for posting it Yakky
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yakky said:As cut and paste happy as you can get, you couldn't post that here???? :tongue2:
What do you think of the Iranian study?
Ch96067 said:After having a look at the scientific article mentioning the enzymes amylase and lipase, I remembered that these very same enzymes are part of human saliva (more here Saliva - Wikipedia, the free encyclopedia).
So perhaps our saliva could act as bird poo if left long enough on paint. If I had a scrap panel I would definitely do a test for the fun of it. Perhaps someone with a panel can do it and let us know the outcome.
yakky said:I think the key here is an enzymatic reaction. While most paints and LSPs are acid resistant, nothing seems impervious to bird poo and eggs. Bugs also create enzyme based etching. Some of my research has indicated that bird poo isn't extremely acidic.
While I agree that bird poo varies greatly, the fact that a synthetic substance is available to test with changes things greatly for me. While it was certainly possible to gather a bunch of samples of the real thing and mix them together, I would have no guarantee of any sort of reaction.
Ron, I am curious about your research. If you don't mind sharing, what sort of variance did you observe with various LSPs? I have done no repeatable (even semi scientific) research but anecdotal evidence suggests polysiloxane sealants are as prone to etch as clean paint. Carnauba waxes see to offer much more protection for me.
jfelbab said:My experience as well. I used to work in an older part of a city right smack on the shores of Lake Michigan. This city was home to around 600,000 people and around a twice that number of seagulls.The lake was home to millions of Alewives, a delicacy for the gulls. The gulls were literally painting the rooftops in guano. You practically needed boots to walk down the street. I had no choice but to park in an outdoor parking lot and would be out about every hour or two wiping down my daily driver.
I started with sealants (Zaino, NXT, M21, Klasse) and found them useless to protect the paint against this onslaught. I then began topping with Meg's #16, #26, or Collinite 476 and saw much greater protection. I found that the carnauba was only effective for a week or two tops though. This area was surrounded on two sides by expressways, several metal foundries just to the south and a coal fired power plant was a few blocks to the west. I suspect that's why waxes only lasted such a short time but after a couple weeks I needed to reapply the carnauba or I'd see damage.
My experience in this hellish environment was that Carnauba provided a much better defense against the effects of acidic damage. I've taken to topping my daily driver with a Carnauba ever since. Happily, I don't work there any longer.![]()
jfelbab said:... I used to work in an older part of a city right smack on the shores of Lake Michigan. This city was home to around 600,000 people and around a twice that number of seagulls..I started with sealants (Zaino, NXT, M21, Klasse) and found them useless to protect the paint against this onslaught. I then began topping with Meg's #16, #26, or Collinite 476 and saw much greater protection
Ron Ketcham said:Do seem to recall the 1000P, old standby mold release paste wax did about the best job....
TOGWT said:Protection - an acrylic polymer or polyethylene-acrylic (Klasse, Jeff Werkstatt or Duragloss #105 Total Performance Polish) are all acid-based so they are more resistant to acidic pollutants (acid rain, bird excrement, and etc) than other polymers