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Exhaust Tips corrosion - What do you think?

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Bus_ter
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Bus_ter PCGB Member
2019/02/12 19:08:54 (permalink)

Exhaust Tips corrosion - What do you think?

Hello fellow R3 members,
 
My 718 is coming up to 7K miles and 9 months old. I noticed today after giving it a wash in the mild weather that the chrome plated exhaust tips are showing significant amounts of corrosion. Have a look at the attachment. This seems to me unacceptable on a 2018 car, especially as it's garaged and not driven on Wintery/gritted roads. The rest of the car, including the underneath looks brand new. What do you think?
 
I've emailed our local friendly OPC and hopefully these can be replaced under warranty. It does ruin the look of an otherwise spotless looking car.
 
 

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    Eldavo
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/12 19:44:38 (permalink)
    Eek - that is far worse than I was expecting to see. Don‘t let them fob you off!

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    milnsey
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    milnsey PCGB Member
    Re: Exhaust Tips corrosion - What do you think? 2019/02/12 21:01:45 (permalink)
    Yes should be a warranty job, got mine done on 981 GTS couple of years ago
    carnaby35
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/12 21:52:55 (permalink)
    Not good enough on a car of that quality, sold my 911 at 13 yr old and they were mint.

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    Daveotto
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/12 23:14:29 (permalink)
    What have you been using to clear them with? Cleaning agent, or application method might be leading to the high level of oxidation 
     
    I think they might clean up fine. Recommend cleaning them with a standard chrome polish (Carplan or similar), a microfibre cloth and some elbow grease. Expensive detailing car polishes in general I have found to be inferior and require a ot more elbow grease.
     
    Once clean if they are pitted they might need replacing but dealer might challenge on a warranty claim if you have been using  Cif and a brillo pad.
    post edited by Daveotto - 2019/02/12 23:17:09
    Bus_ter
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/12 23:40:13 (permalink)
    Good question.
    I haven't been cleaning them directly at all. The car was ceramic coated from new last year. Since then I've been use a pre-wash snow foam and then carefully washing the car with Gwash (Gtechniq car shampoo) with a mitt and two bucket method. Because of the ceramic coating the paint comes up beautifully. I noticed the exhausts still looked dirty so I use a slightly more aggressive cleaner (W5 a citrus based all puropse cleaner), and noticed the exhaust tips wouldn't clean up. I've not tried using any aggressive cleaners like autosol or metal polish, or aggressive methods like steel wool or brillo pad. It does look like corrosion on the chrome surface to my eye. I'm certainly not going to try any aggressively cleaning until the dealer has a look- I don't want my cleaning efforts to look like they may have caused the issue and thus effect a warranty claim. 
    Daveotto
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/13 17:50:45 (permalink)
    Hate to say it but it might be the ceramic coat causing the problem. Ceramic coats chemically bond to the surface, as opposed to waxes that just sit on the surface or have weak hyrodgen bonding. By definition this means a reaction takes place that might be causing an oxide coating that could be being catalysed (speeded up) by a cleaning agent.
     
    Beware, I have heard anecdotal stories of manufacturers  invalidating paintwork warranty claims for people with ceramic coating. Might be worth a search though some detailing forums or piston heads
     
    Would still be inclined to see if i could remove the corrosion myself. If you are worried about using something to abrasive maybe try Goddards silver polish and a waffle cloth/microfibre 
    post edited by Daveotto - 2019/02/13 17:54:17
    Bus_ter
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    Re: Exhaust Tips corrosion - What do you think? 2019/02/13 21:09:55 (permalink)
    Well the paint was ceramic coated, not sure about the exhaust. They didn't mention the exhaust at the time, and I assume it wasn't coated, but I don't know for sure.
    It is odd. I've has many cars over the years and I've never experienced corrosion on exhaust tips. Maybe they will polish up. I'll let the dealer have a look first before I do anything that could damage them further.
    Bus_ter
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    Re: Exhaust Tips corrosion - What do you think? 2019/03/02 05:19:49 (permalink)
    **UPDATE**
     
    I now have some shiny new tail tips thanks to Porsche Teesside and the warranty.
    I'm wondering if there is anything I can put on them to help prevent this re-occurring? Otherwise I could be through three more sets before I run out of warranty!
     
    The service at Teesside Porsche was great. They gave me a Boxster which coincided perfectly with the mini heat-wave we experienced. Perfect timing for a convertible :-D
    Only downside was that I reported a trim rattle while the car was in. They identified it during a short test drive and said they fixed it. Unfortunately it was still there on the drive home.   
    Daveotto
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    Re: Exhaust Tips corrosion - What do you think? 2019/03/02 07:18:48 (permalink)
    Pleased to hear you have got them replaced  without any issue.
     
    Have always found that a little bit of WD40 or GT85 sprayed on after cleaning makes it easier to remove soot build up from Chrome tips, might help with protecting them from corrosion as well ?
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