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P911X50
Monza


Joined: 03 Jan 2017
Posts: 206
Location: Hertfordshire


PostPosted: Sun Feb 11, 2018 6:57 pm    Post subject: Spark plug change interval Reply with quote

Hi.

I have a 996tt and its due a service. The S/H is:

Jan 2014 - 68k - major service with spark plug change.
Jan 2015 - 71k - minor service
Jan 2016 - 72.5k - minor (completed by seller RPM)
Jan 2017 - 73k - minor

I understand that spark plugs should be changed every 4 year/28k miles. Noting that the car has only covered 5k since last spark change 4 years ago. Should I have these changed and how much is the cost at Indy?

I'm hoping to maintain it's immecable service record

Thanks
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T8
General
General


Joined: 29 Jun 2010
Posts: 14251
Location: Kent


PostPosted: Sun Feb 11, 2018 7:29 pm    Post subject: Reply with quote

I thought the spark plug change was on miles not time. iirc it's 30k miles so yours don't need changing.
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deMort
Shanghai


Joined: 21 Mar 2015
Posts: 4902
Location: Brighton


PostPosted: Sun Feb 11, 2018 7:50 pm    Post subject: Reply with quote

Part of the service sheet for referance .
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Poker2009
Imola


Joined: 09 Sep 2009
Posts: 817
Location: London


PostPosted: Sun Feb 11, 2018 7:54 pm    Post subject: Reply with quote

As you mentioned you want to maintain the service record, spark plugs need to be done every 4 years.

However, since you have only covered 5k miles they will come out clean, and will be an unfortunate waste of money.

I wouldn't change mine until six years (20-25k miles for me) - and even that I know deep down will be premature! But I also am not bothered about service history.
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asterix_the_gaul
Suzuka


Joined: 20 Dec 2008
Posts: 1033
Location: Cheshire

1999 Porsche 996 Carrera 2

PostPosted: Sun Feb 11, 2018 7:56 pm    Post subject: Reply with quote

Awesome, my next plug change not due for about another 10 years then.
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Poker2009
Imola


Joined: 09 Sep 2009
Posts: 817
Location: London


PostPosted: Sun Feb 11, 2018 8:11 pm    Post subject: Reply with quote

asterix_the_gaul wrote:
Awesome, my next plug change not due for about another 10 years then.


Spark plugs are not what they were 20 years ago (when they needed to be done every year), and have a MUCH longer shelf life now.
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P911X50
Monza


Joined: 03 Jan 2017
Posts: 206
Location: Hertfordshire


PostPosted: Mon Feb 12, 2018 8:03 pm    Post subject: Reply with quote

Poker2009, Asterix, Demort and T8. Thank you all for your help.
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