Yellow spots on surface of my car - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

tzhu07 · 08-24-2014, 08:11 PM

After washing it today, I noticed there's leftover small yellow spots on the surface of my car. It seems stuck there pretty good.

Are these bird droppings, bugs, pollen, etc? I even tried liquid dish soap and it didn't come out.

BlaineWasHere · 08-24-2014, 08:13 PM

Google or search around here for "rail dust"

Also don't put liquid dish soap on your car.

tzhu07 · 08-24-2014, 08:45 PM

I image searched "rail dust", and those spots look nothing like what's on my car. I'm pretty sure it's something else.

JoeC · 08-24-2014, 08:48 PM

If it's the same as what I get on my car, I think it's bee droppings... I clay bar the spots that don't come off with a normal car wash and then put a quick coat of wax on that section. If you have a good coat of wax on your car on they usually come off real easy.

civdaddy · 08-24-2014, 09:09 PM

Pics or it didn't happen.

tzhu07 · 08-24-2014, 09:46 PM

Quote:

Originally Posted by civdaddy

Pics or it didn't happen.

It's really hard to photograph because the yellow is a bit translucent, and my car is white colored.

HeadBanger · 08-24-2014, 11:25 PM

Without pictures it's impossible to say.

My money is on rust spots. Clay barring will remove them. They're most often caused by brake dust. Probably the only reason you notice them is because your car is white.

Also dish soap wont harm your car in any way. It's a degreaser though, so if you have wax on your car it will remove it,

blunova · 08-24-2014, 11:41 PM

I know exactly what you're talking about. I've had them on my SWP before (just a couple of spots). I washed the car the best I could, but they wouldn't come off. However, the next time I went to wash, they were gone. Someone else on the forums said the sun takes them off with time, which is what I believe happened to me. Give it a couple of weeks in the sun and I bet they'll be gone.

(Oh, and try to minimize parking under trees!)

torqdork · 08-25-2014, 01:01 AM

Quote:

Originally Posted by tzhu07

I image searched "rail dust", and those spots look nothing like what's on my car. I'm pretty sure it's something else.

Right. Assuming your car was bought new in WA, it was discharged from a ship in Portland and trucked to Seattle so has never been on a train.

I'm guessing tree sap that most car washes won't touch. If so, it'll take a good quality fine polish and random orbital buffer for the best outcome or a gentle claybar treatment followed by protective wax.

anewprelusion · 08-25-2014, 01:04 AM

Sounds like bug poop. I get 5 or so daily where I work. With wax already on the car, most will come off with ease. Some will leave a yellow mark, but usually disappears and fades with time in the sun.

Atticus808 · 08-25-2014, 01:31 AM

it's sap.

put some APC (All Purpose Cleanet) on it, let it sit for a couple minutes, dab it with a microfiber towel and repeat.
it'll come off

humfrz · 08-25-2014, 02:30 AM

I be in the tree sap camp.

I suggest you see if alcohol will remove them.

humfrz

tzhu07 · 08-25-2014, 07:00 AM

I purchased my car brand new in Sept 2013 and never clay barred my car, or any car ever. On the upcoming one-year mark, I'll try it out, in between the car wash and the wax.

I'll likely just look for a bunch of How-To videos on YouTube. Seems legit.

nzer · 08-25-2014, 08:13 AM

Pollen I reckon!

Clay bar should remove it whatever it is.

08-24-2014, 08:11 PM	#1
tzhu07 Senior Member Join Date: Sep 2013 Drives: FR-S Location: WA Posts: 189 Thanks: 1 Thanked 103 Times in 56 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Yellow spots on surface of my car After washing it today, I noticed there's leftover small yellow spots on the surface of my car. It seems stuck there pretty good. Are these bird droppings, bugs, pollen, etc? I even tried liquid dish soap and it didn't come out.

08-24-2014, 08:13 PM	#2
BlaineWasHere Grip>Drift Join Date: Jun 2012 Drives: FRS Location: NorCal Posts: 3,472 Thanks: 782 Thanked 1,749 Times in 918 Posts Mentioned: 53 Post(s) Tagged: 2 Thread(s)	Google or search around here for "rail dust" Also don't put liquid dish soap on your car. __________________ My FR-S Build Thread!

08-24-2014, 11:25 PM	#7
HeadBanger Senior Member Join Date: May 2014 Drives: '14 Subaru BRZ Location: Ontario Canada Posts: 979 Thanks: 204 Thanked 409 Times in 260 Posts Mentioned: 21 Post(s) Tagged: 1 Thread(s)	Without pictures it's impossible to say. My money is on rust spots. Clay barring will remove them. They're most often caused by brake dust. Probably the only reason you notice them is because your car is white. Also dish soap wont harm your car in any way. It's a degreaser though, so if you have wax on your car it will remove it, __________________ Life's too short to drive a boring car

08-25-2014, 08:13 AM	#14
nzer Senior Member Join Date: Jun 2012 Drives: 2012 Grey TRD GT86, 2015 VW Golf R Location: Wellington, New Zealand Posts: 1,572 Thanks: 666 Thanked 942 Times in 540 Posts Mentioned: 62 Post(s) Tagged: 0 Thread(s)	Pollen I reckon! Clay bar should remove it whatever it is. __________________ My fully loaded TRD86 http://www.ft86club.com/forums/showt...760#post582760

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08-24-2014, 08:45 PM	#3
tzhu07 Senior Member Join Date: Sep 2013 Drives: FR-S Location: WA Posts: 189 Thanks: 1 Thanked 103 Times in 56 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I image searched "rail dust", and those spots look nothing like what's on my car. I'm pretty sure it's something else.

08-24-2014, 08:48 PM	#4
JoeC Senior Member Join Date: Apr 2014 Drives: Subaru BRZ Limited Location: Colorado Posts: 354 Thanks: 477 Thanked 222 Times in 118 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	If it's the same as what I get on my car, I think it's bee droppings... I clay bar the spots that don't come off with a normal car wash and then put a quick coat of wax on that section. If you have a good coat of wax on your car on they usually come off real easy.

08-24-2014, 09:09 PM	#5
civdaddy Senior Member Join Date: Oct 2012 Drives: Slow Location: U.S. Posts: 261 Thanks: 48 Thanked 134 Times in 68 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Pics or it didn't happen.

08-25-2014, 01:04 AM	#10
anewprelusion Senior Member Join Date: Sep 2013 Drives: 2013 Subaru BRZ Limited Location: California Posts: 148 Thanks: 51 Thanked 86 Times in 46 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Sounds like bug poop. I get 5 or so daily where I work. With wax already on the car, most will come off with ease. Some will leave a yellow mark, but usually disappears and fades with time in the sun.

08-25-2014, 01:31 AM	#11
Atticus808 Senior Member Join Date: May 2012 Drives: Splash Mountain Location: Disneyland Posts: 1,057 Thanks: 940 Thanked 2,337 Times in 918 Posts Mentioned: 24 Post(s) Tagged: 2 Thread(s)	it's sap. put some APC (All Purpose Cleanet) on it, let it sit for a couple minutes, dab it with a microfiber towel and repeat. it'll come off

08-25-2014, 02:30 AM	#12
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,409 Thanks: 29,794 Thanked 32,812 Times in 16,830 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	I be in the tree sap camp. I suggest you see if alcohol will remove them. humfrz

08-25-2014, 07:00 AM	#13
tzhu07 Senior Member Join Date: Sep 2013 Drives: FR-S Location: WA Posts: 189 Thanks: 1 Thanked 103 Times in 56 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I purchased my car brand new in Sept 2013 and never clay barred my car, or any car ever. On the upcoming one-year mark, I'll try it out, in between the car wash and the wax. I'll likely just look for a bunch of How-To videos on YouTube. Seems legit.

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