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Light yellow stains on car

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Old Oct 5, 2018 | 02:44 AM
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Default Light yellow stains on car

Hi Guys,

i recently purchased my 2007 ls460, I would like to know if these light yellow stains can be recitfied without any paint job, pictures attached.

Please help.
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Old Oct 5, 2018 | 03:48 AM
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I’m not seeing any pictures.
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Old Oct 5, 2018 | 04:13 AM
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Originally Posted by ShaneAlan
I’m not seeing any pictures.
sorry, here we go!


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Old Oct 5, 2018 | 04:34 AM
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Have you tried giving it a wash, clay, polish (and compound if needed in areas) then wax?

Gorgeous LS by the way, I've always wanted to visit Dubai!
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Old Oct 5, 2018 | 05:45 AM
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Originally Posted by tofuprod
Have you tried giving it a wash, clay, polish (and compound if needed in areas) then wax?

Gorgeous LS by the way, I've always wanted to visit Dubai!
I’m hesitant, because i went to a service station to show them this mark, they said that we can try but no guarantee, mind you we don’t have great products in Dubai for cars like U.S have. So thought I check if any one you ever had this same experience.

thanks! And I always wanted to visit U.S!
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Old Oct 5, 2018 | 06:31 AM
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I can’t tell what the stain is or how deep it is into the paint from the pix you posted so I would check into having a detail shop check it out and see what they say. There is plenty of helpful info in the detailing section here on the CL.
If you want to do the detailing yourself check out some of the detailing websites like www.adamspolishes.com www.autogeek.net or www.chemicalguys.com for products and "how to" videos.






Last edited by Chuckinnj; Oct 5, 2018 at 07:19 AM.
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Old Oct 5, 2018 | 07:03 AM
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Originally Posted by Chuckinnj
I can’t tell what the stain is or how deep it is into the paint from the pix you posted so I would check into having a detail shop check it out and see what they say. There is plenty of helpful info in the detailing section here on the CL.
If you want to do the detailing yourself check out some of the detailing websites like www.adamspolishes.com or www.chemicalguys.com for products and "how to" videos.




many thanks! Some one recommended me glipton gt iron eater, any advice?

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Old Oct 5, 2018 | 07:18 AM
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Originally Posted by chainbuilt


I’m hesitant, because i went to a service station to show them this mark, they said that we can try but no guarantee, mind you we don’t have great products in Dubai for cars like U.S have. So thought I check if any one you ever had this same experience.

thanks! And I always wanted to visit U.S!
service station? you should seek out professional detailing places... places that specialise in detailing ONLY and that is the only thing they do... I like to go to places that have do lots of expensive cars... usually that is a good gauge... instagram is a good place to start I think.... they post of pictures etc.. you can ask them if this is something they can fix.
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Old Oct 5, 2018 | 07:38 AM
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Originally Posted by chainbuilt


many thanks! Some one recommended me glipton gt iron eater, any advice?


This MAY work "IF" the stain is "iron based" (like rust) so I would try it on this mystery stain..... Urine, soda, food will need to be cleaned with a chemical cleaner. Petroleum base use adhesive remover.
Experiment on a SMALL AREA with: Iron Remover, Adhesive remover, All Purpose Cleaner or Detailing Clay and ALWAYS USE a micro fiber towel.

BTW! I ALWAYS use a iron remover as part of my "de-contamination process" when I detail paint it really works!...... Go the links I supplied and check out CLEANERS and IRON REMOVERS along with the "how to videos"


Last edited by Chuckinnj; Oct 5, 2018 at 07:42 AM.
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Old Oct 5, 2018 | 09:21 AM
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Maybe a dog thought the LS was a fire hydrant.

Those stains should come out, don't know what they are, chemical that was burned into the paint, glue residue, etc. I would try a claybar first but you will likely have to polish or compound it with a polisher to get them out.
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Old Oct 5, 2018 | 12:11 PM
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Originally Posted by UDel
Maybe a dog thought the LS was a fire hydrant.

Those stains should come out, don't know what they are, chemical that was burned into the paint, glue residue, etc. I would try a claybar first but you will likely have to polish or compound it with a polisher to get them out.
thanks, a lot of you have mentioned about clay bar, I guess I’ll give it a try.
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Old Oct 5, 2018 | 12:11 PM
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I had a 3rd Gen RX-7. It had an OMP (oil metering pump) and would purposely add oil to the intake to keep the apex seals lubed. The oil would get (mostly) burnt and proceed to stick to and decorate the rear bumper. It was very subtle, but was there. It would mostly go unnoticed unless I washed it and didn't get it all.

This is what I would do. I would spray car wash soap on my bumper, and let it sit. After a while I would come back and see the yellow oozing down the bumper. Then I learned to spray the bumper then take my wash mit and spread it over the yellow areas, and let it sit. I'd come back and lots of yellow ooze. Then use the wash mit on it again and it would all come off fairly easy.

I mention this because of 2 possible things. 1. Maybe your engine is burning some oil, and then depositing oil on your rear bumper. Or, 2. perhaps you have a very light oil leak and while at speed the oil is "atomizing" as it is leaking under the car and blowing back and depositing on your bumper. I say this because your yellow look, looks very similar to my RX-7's bumper would look after some time.

Spray it with some car wash soap, give it 5 minutes and see if the yellow oozes down with the soap. Then you'll know if it's oil.
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Old Oct 5, 2018 | 03:00 PM
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Lots of good ideas above. If none work, it is possible that the bumper was repainted and the clearcoat is going bad.
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Old Oct 5, 2018 | 10:11 PM
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Originally Posted by Oliver Enterprises
I had a 3rd Gen RX-7. It had an OMP (oil metering pump) and would purposely add oil to the intake to keep the apex seals lubed. The oil would get (mostly) burnt and proceed to stick to and decorate the rear bumper. It was very subtle, but was there. It would mostly go unnoticed unless I washed it and didn't get it all.

This is what I would do. I would spray car wash soap on my bumper, and let it sit. After a while I would come back and see the yellow oozing down the bumper. Then I learned to spray the bumper then take my wash mit and spread it over the yellow areas, and let it sit. I'd come back and lots of yellow ooze. Then use the wash mit on it again and it would all come off fairly easy.

I mention this because of 2 possible things. 1. Maybe your engine is burning some oil, and then depositing oil on your rear bumper. Or, 2. perhaps you have a very light oil leak and while at speed the oil is "atomizing" as it is leaking under the car and blowing back and depositing on your bumper. I say this because your yellow look, looks very similar to my RX-7's bumper would look after some time.

Spray it with some car wash soap, give it 5 minutes and see if the yellow oozes down with the soap. Then you'll know if it's oil.
Many thanks, I guess it’s the easiest option to try as car products in Dubai cost a fortune and are not easily available.
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Old Oct 5, 2018 | 10:13 PM
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Originally Posted by TriC
Lots of good ideas above. If none work, it is possible that the bumper was repainted and the clearcoat is going bad.
thats what paint guy I spoke to to said, that’s it needs to be repainted, not sure if he was trying to dupe me
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