WTH is this in my bumper? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

humfrz · 09-30-2015, 04:40 PM

Quote:

Originally Posted by chas3wba0

I meant "rubbing alcohol" as in over-the-counter isopropyl alchohol, which does not react with plastics as far as I know. It's the go-to solution for getting rid of wax, though.

Yep, I agree with ol @chas3wba0, I'd suggest you try a small spot using isopropyl alcohol. Maybe rub it in with a soft brush.

If you don't have any rubbing alcohol, you might try vodka or gin. NOT the cheap stuff, you serve your guests after they are half drunk.....

If that fails, consider ...... carefully and quickly, trying a very small spot, on the underside, with a small toothbrush ..... acetone.....

(disclaimer - humfrz is not responsible for any uses of acetone, outside the chemistry lab ........

)

humfrz

OK, if none of that works, I'd go with theory "B" ...... the marks are caused by rock chips stressing (thus turning white) bits of the plastic.

If that is the case ....... "paint" the bumper with .... sorry, got to go ....it's my nap time ....ZZZZZZ

Jfheisenberg · 09-30-2015, 04:44 PM

Quote:

Originally Posted by humfrz

Yep, I agree with ol @chas3wba0, I'd suggest you try a small spot using isopropyl alcohol. Maybe rub it in with a soft brush.

If you don't have any rubbing alcohol, you might try vodka or gin. NOT the cheap stuff, you serve your guests after they are half drunk.....

If that fails, consider ...... carefully and quickly, trying a very small spot, on the underside, with a small toothbrush ..... acetone.....

(disclaimer - humfrz is not responsible for any uses of acetone, outside the chemistry lab ........

)

humfrz

OK, if none of that works, I'd go with theory "B" ...... the marks are caused by rock chips stressing (thus turning white) bits of the plastic.

If that is the case ....... "paint" the bumper with .... sorry, got to go ....it's my nap time ....ZZZZZZ

my last resource if those marks does not go away is to plasti dip the damn thing.

chas3wba0 · 09-30-2015, 04:50 PM

Quote:

Originally Posted by humfrz

Yep, I agree with ol @chas3wba0, I'd suggest you try a small spot using isopropyl alcohol. Maybe rub it in with a soft brush.

If you don't have any rubbing alcohol, you might try vodka or gin. NOT the cheap stuff, you serve your guests after they are half drunk.....

If that fails, consider ...... carefully and quickly, trying a very small spot, on the underside, with a small toothbrush ..... acetone.....

(disclaimer - humfrz is not responsible for any uses of acetone, outside the chemistry lab ........

)

humfrz

OK, if none of that works, I'd go with theory "B" ...... the marks are caused by rock chips stressing (thus turning white) bits of the plastic.

If that is the case ....... "paint" the bumper with .... sorry, got to go ....it's my nap time ....ZZZZZZ

Acetone... that stuff is vicious. Would probably leave a white mark, I bet

Shady195 · 09-30-2015, 04:51 PM

It's wax...

Wax and black plastics/seals don't mix.

Use peanut butter to get it out.. No I'm not joking; take some peanut butter and rub it into the plastic firmly, take some dish soap and a rag and wipe clean.

DO NOT ACETONE YOUR BUMPER

RickyBobby · 09-30-2015, 07:07 PM

I worked as a research chemist before I retired. Yeah, I'm an old f**k.

You want to try an aliphatic solvent first. As others have already recommended, first try IPA. You can get the 91% or 70% versions at Walmart. If that doesn't work try minerals spirits, aka stoddard solvent or paint thinner, not paint remover.

You can also try bug and tar remover. They contain a large amount of aliphatic petroleum distillates and IPA. https://www.turtlewax.com/docs/defau...ug-tar-remover

And as others have stated, DO NOT use an aromatic solvent like acetone or toluene.

DO NOT wax any of your plastic trim or the black plastic part of your bumper with carnuba wax. There are products out there, i.e., Mothers Back to Black or Meguiar's Ultimate Black, for the black plastic trim.

humfrz · 09-30-2015, 08:02 PM

Quote:

Originally Posted by RickyBobby

I worked as a research chemist before I retired. Yeah, I'm an old f**k.

And as others have stated, DO NOT use an aromatic solvent like acetone or toluene.

OK, who is up for a chemistry experiment ......

Take a before picture of your BRZ front pumper ........ then hit it with some acetone ....... then take an after picture.

Be sure to replicate the "hit spot" at least 4 times; use water as a control.

I'd participate ........ but, I don't have a BRZ .....

humfrz

Chen · 09-30-2015, 08:21 PM

Its all from the STI badge.

DJCarbine · 09-30-2015, 11:43 PM

Do you have a pre-wax cleaner? I have had wax buildup appear out of the blue weeks after a detail, usually a small spot on a lower rocker panel that I manage to miss every single time.

Ultramaroon · 10-01-2015, 12:29 AM

Dish soap solution and a toothbrush. Little circles.

Turbo95eg6 · 10-01-2015, 01:10 AM

I get wax build up on my moldings too, doesn't bother me.

chaoskaze · 10-01-2015, 01:37 AM

it's Wax

WhiteFRS69 · 10-01-2015, 06:06 PM

hit it with a little bug/tar remover or an all purpose cleaner (make sure you dont get it on the paint, not bad for it, just will remove any wax you have on there)

Jfheisenberg · 10-02-2015, 07:26 AM

Quote:

Originally Posted by WhiteFRS69

hit it with a little bug/tar remover or an all purpose cleaner (make sure you dont get it on the paint, not bad for it, just will remove any wax you have on there)

thanks i used the spray u gave me but did not worked. Ill give the bug remover a try after all this rain mess goes away

Jfheisenberg · 10-04-2015, 11:41 AM

I tried washing it with soap and a brush and it did not worked. I also tried using duck tape to remove this shit and no go.

09-30-2015, 07:07 PM	#19
RickyBobby Senior Member Join Date: Jul 2014 Drives: 2013 Firestorm FR-S AT Location: Smokey Mountains Posts: 404 Thanks: 54 Thanked 261 Times in 138 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I worked as a research chemist before I retired. Yeah, I'm an old f*k. You want to try an aliphatic solvent first. As others have already recommended, first try IPA. You can get the 91% or 70% versions at Walmart. If that doesn't work try minerals spirits, aka stoddard solvent or paint thinner, not paint remover. You can also try bug and tar remover. They contain a large amount of aliphatic petroleum distillates and IPA. https://www.turtlewax.com/docs/defau...ug-tar-remover And as others have stated, DO NOT use an aromatic solvent like acetone or toluene. DO NOT wax any of your plastic trim or the black plastic part of your bumper with carnuba wax. There are products out there, i.e., Mothers Back to Black or Meguiar's Ultimate Black, for the black plastic trim. Last edited by RickyBobby; 09-30-2015 at 07:17 PM.*

09-30-2015, 11:43 PM	#22
DJCarbine Thupercharged Join Date: Mar 2013 Drives: 2013 FR-S Location: La Grange Park, IL. Posts: 1,501 Thanks: 116 Thanked 751 Times in 439 Posts Mentioned: 23 Post(s) Tagged: 0 Thread(s)	Do you have a pre-wax cleaner? I have had wax buildup appear out of the blue weeks after a detail, usually a small spot on a lower rocker panel that I manage to miss every single time. __________________ 2013 FRS Vortech V3 11psi Revworks UEL - PLM Overpipe - MOTIV catted frontpipe - Invidia Q300 2019 Series.Grey STI - Stage1+ SF

10-01-2015, 12:29 AM	#23
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,865 Thanks: 52,120 Thanked 36,513 Times in 18,917 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	Dish soap solution and a toothbrush. Little circles. __________________ service manuals

10-01-2015, 01:10 AM	#24
Turbo95eg6 Senior Member Join Date: Nov 2013 Drives: 2014 BRZ SWP LTD Location: The 503 Posts: 2,174 Thanks: 331 Thanked 2,266 Times in 858 Posts Mentioned: 18 Post(s) Tagged: 3 Thread(s)	I get wax build up on my moldings too, doesn't bother me. __________________ Instagram: stimson

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09-30-2015, 04:51 PM	#18
Shady195 Senior Member Join Date: Jun 2014 Drives: '13 10 Series FRS #1203 Location: Albany, NY Posts: 850 Thanks: 7 Thanked 385 Times in 220 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	It's wax... Wax and black plastics/seals don't mix. Use peanut butter to get it out.. No I'm not joking; take some peanut butter and rub it into the plastic firmly, take some dish soap and a rag and wipe clean. DO NOT ACETONE YOUR BUMPER

09-30-2015, 08:21 PM	#21
Chen Regional Moderator Join Date: Aug 2012 Drives: 13' ZN6 / 00' AP1 / 20' A90/ 15 EVO Location: Portland, OR Posts: 4,629 Thanks: 85 Thanked 1,275 Times in 854 Posts Mentioned: 307 Post(s) Tagged: 0 Thread(s)	Its all from the STI badge.

10-01-2015, 01:37 AM	#25
chaoskaze The Fail Boat Join Date: Aug 2011 Drives: CWP S.B. Location: LasVegas Posts: 3,028 Thanks: 4,718 Thanked 1,293 Times in 873 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	it's Wax

10-01-2015, 06:06 PM	#26
WhiteFRS69 Senior Member Join Date: Oct 2013 Drives: 2014 Scion FRS Location: NNJ Posts: 2,289 Thanks: 1,808 Thanked 1,432 Times in 756 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	hit it with a little bug/tar remover or an all purpose cleaner (make sure you dont get it on the paint, not bad for it, just will remove any wax you have on there)

10-04-2015, 11:41 AM	#28
Jfheisenberg Senior Member Join Date: Jan 2015 Drives: 2015 BRZ Series Blue WRB Location: North Jersey Posts: 830 Thanks: 371 Thanked 204 Times in 156 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	I tried washing it with soap and a brush and it did not worked. I also tried using duck tape to remove this shit and no go.

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