Removing Oil contamination from glass - advice please

[Sheefa]

Hi all

 

Unfortunately the new red beauty has some horrible oil contamination within the rear quarter glasses, both sides. It’s very odd as the other glass panels are absolutely fine and the bodywork is immaculate.

 

Lee had the car stored adjacent to his wheel refurb workshop and there were rear quarter window tints which I have now removed. The oil itself seems to be embedded within the glass and I don’t know what to try to resolve, if possible.

 

A few ideas were Autoglym Glass Cleaner, Brake Cleaner, Methylated Spirits. I haven’t tried any of these as of yet. This oil I imagine will be extremely stubborn.

 

Any tips/advice would be greatly appreciated.

 

Thanks

Greg

 

 

 

[SupraTRD_MK4]

Since they are not actually glass, you could treat them the same as one would refurb their head lamps. Use 1500 grit water paper with soapy water and then a 2000 grit and then polish it thereafter with Meguiars or whatever with a polishing wheel.

[Sheefa]

Here's a couple of pics, hard to really see.

 

 

[Sheefa]

Since they are not actually glass, you could treat them the same as one would refurb their head lamps. Use 1500 grit water paper with soapy water and then a 2000 grit and then polish it thereafter with Meguiars or whatever with a polishing wheel.

Ah I thought the UKs were glass rear quarters mate? Silly me. Good shout if so I have the full refurb kits etc

 

 

[Ric]

Since when are they not glass? never knew this?

 

I got rid of some pretty stubborn water marks on mine with some polishing compound and a small rotary head. Even then, took a while.

[SupraTRD_MK4]

I don't know bout the UK cars Sheefa. Just have a check and see. Ric, I have two oem ones. One off my car original and one import but both are JDM. You can see they not glass and even the tap on it sounds otherwise. You can test this on your car and tell me? Perhaps I am mad but I feel its a hard plastic of some sort.

Sheefa, if you search on youtube a channel named motion auto tv, you will see the lad has just redone his. Didn't have any oil marks but I saw him sanding them down and repairing the rubber trim on them as well.

[mwilkinson]

I'm not sure about this.

 

I'm sure I've seen pictures of these having been broken before and they had shattered like glass. Also my new rear quarter glass for my car have the glass symbol on the box which generally means they are glass and care should be taken.

[mwilkinson]

Have you tried using a melamine sponge. Equal to a 5000 grit sand paper?

 

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F171641969094

 

That with a clay bar and some glass cleaner should do the job.

[blythmrk]

They are glass I am 99.9% sure so would not be using any type of sand paper on them.

 

I would try paint thinners or petrol avoiding getting it on the paint or trims then t cut or something similar.

[Sheefa]

I've ordered two new rear quarters anyway as thought I would have to replace worst case and they weren't bad at £300 for both.

 

I'm sure they're glass too, feels like it. I'll test with a hammer if I do replace them!

 

 

[Marty]

I used white vinegar to get cement dust off my front screen, only thing that worked. May work with oil too?

[Sheefa]

Everything suggests Glass!!

 

 

[Marty]

It's not plastic

[mwilkinson]

Ref the melamine sponge. There will be no issues using this on glass. It won't even remotely scratch it but it does clean it.

[Sheefa]

Thanks you mate I'll get one ordered.

 

 

[bignum]

So you bought 2x new ones but havn`t tried cleaning existing ones yet? you realize its a massive ballbag ache to change them don`t you, ask Num for a price i dare ya:d

[Sheefa]

So you bought 2x new ones but havn`t tried cleaning existing ones yet? you realize its a massive ballbag ache to change them don`t you, ask Num for a price i dare ya:d

 

Yes mate I know it’s a horrendous job, truly awful. Thankfully Num said he would do it for free out of the kindness of his big heart, which really was nice.

 

 

 

[Sheefa]

Also there is slight overspray from where they didn't take glass out so I figured try and clean them and resolve or just replace and have done with it.

 

 

[Marty]

Just to add to my white vinegar suggestion, i used a 50/50 mix with water.

[evinX]

They are glass. I have personally broken one and it shattered like normal glass.

 

Soapy wet cloth on the oil. Leave for a few mins. Dry cloth to wipe it up. Autoglym glass cleaner to finish. Gets that residue off.

[Sheefa]

Thanks Marty and Evinx for the excellent tips..I'll spend a few hours going at it over the weekend !

 

 

[evinX]

I don't know bout the UK cars Sheefa. Just have a check and see. Ric, I have two oem ones. One off my car original and one import but both are JDM. You can see they not glass and even the tap on it sounds otherwise. You can test this on your car and tell me? Perhaps I am mad but I feel its a hard plastic of some sort.

Sheefa, if you search on youtube a channel named motion auto tv, you will see the lad has just redone his. Didn't have any oil marks but I saw him sanding them down and repairing the rubber trim on them as well.

 

Thats because of the small surface area and curvature to the glass. They do take a tap differently. 100% glass.

[shaky]

You can machine polish glass to get scratches out or stains .

[SupraTRD_MK4]

Thanks for clearing that up for me gents. My bad and apologies to all. I did think of the shape contributing to the different sound Kevin but wasn't sure.

Don't test your old ones with a hammer Sheefa, you can sell them off mate. There is a set that needs work on ebay going for less than $300

Sorry bout the misinformation there mate.

[Dnk]

Try good old fairy liquid, use it neat