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C4-STORM
Montreal


Joined: 29 Aug 2017
Posts: 577
Location: Hampshire

2004 Porsche 996 Carrera 4S

PostPosted: Mon Apr 16, 2018 7:48 pm    Post subject: Service Schedule, Miles, Oil.. Reply with quote

Evening all Cool

So 996 service intervals changed in 2003 to 12k/24 months whichever is sooner.

On that basis many of the average to low mileage examples may well have only had the oil dropped every 2 years.

Less frequent oil change combined with shorter trips/less use - the weekend car. Are these examples more prone to bore score/engine related issues Question

Were there any actual uprated components developed in the '53 onwards models?

Dont know
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 13841
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Apr 16, 2018 8:04 pm    Post subject: Reply with quote

Nearly all reported 996 ims bearing failures in my data collection was 53 plate C4S models.

http://911uk.com/viewtopic.php?t=100994
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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Robertb
Long Beach


Joined: 01 Sep 2003
Posts: 6529
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Mon Apr 16, 2018 8:15 pm    Post subject: Reply with quote

No components were changed for the 04 MY cars, (except the battery I think). It was thought that modern oils could last longer.

It would be interesting to have a 2yr old oil sample tested by Millers to see how effective it stil is.
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"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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C4-STORM
Montreal


Joined: 29 Aug 2017
Posts: 577
Location: Hampshire

2004 Porsche 996 Carrera 4S

PostPosted: Mon Apr 16, 2018 8:16 pm    Post subject: Reply with quote

alex yates wrote:
Nearly all reported 996 ims bearing failures in my data collection was 53 plate C4S models.

http://911uk.com/viewtopic.php?t=100994


Interesting Alex, did they report how far down the line?

I'm assuming the failure would be a few years in Question

As bore score apparently is more likely than IMS failure do you think the same pattern would be likely??
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C4-STORM
Montreal


Joined: 29 Aug 2017
Posts: 577
Location: Hampshire

2004 Porsche 996 Carrera 4S

PostPosted: Mon Apr 16, 2018 8:21 pm    Post subject: Reply with quote

Robertb wrote:
No components were changed for the 04 MY cars, (except the battery I think). It was thought that modern oils could last longer.

It would be interesting to have a 2yr old oil sample tested by Millers to see how effective it stil is.


So by that reckoning regarding oil technology, a '53 onwards which had been serviced annually or sooner (regardless of the low/ave miles) with quality oil would be less likely to suffer engine issues or is it more likely down to drive cycles or both??
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Bluebird911
Nürburgring


Joined: 29 May 2010
Posts: 415



PostPosted: Mon Apr 16, 2018 8:24 pm    Post subject: Reply with quote

My last 2 daily drivers (Both VAG group cars) have a duty cycle clause in the hand book and the on board computer. If you do short trips or live in dusty areas, they say oil changes must be every 12 months, so the usage you outline would require oil changes every 12 months. 24 month oil changes are for cars that are used on frequent long distance runs.

My 996 is older than the 2 year oil change option so don't have access to to that version of handbook, but I would be surprised if the hand book didn't have a similar duty cycle clause.
 
  
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Bluebird911
Nürburgring


Joined: 29 May 2010
Posts: 415



PostPosted: Mon Apr 16, 2018 8:35 pm    Post subject: Reply with quote

C4-STORM wrote:
Robertb wrote:
No components were changed for the 04 MY cars, (except the battery I think). It was thought that modern oils could last longer.

It would be interesting to have a 2yr old oil sample tested by Millers to see how effective it stil is.


So by that reckoning regarding oil technology, a '53 onwards which had been serviced annually or sooner (regardless of the low/ave miles) with quality oil would be less likely to suffer engine issues or is it more likely down to drive cycles or both??


I'm with you on this Robertb. There have been step changes in oil technology which were mostly Synthetic oil. They are very resistant to breakdown of lubricating properties compared to mineral oils which really needed 12 month changes.

Whilst the synthetic oils would maintain its lubricating properties, the problem of extended service schedules is the particles and combustion contaminants that build up in the oil. Less stressed duty cycles produce less of these hence being able to extend the oil change schedule.
 
  
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davecooperc4s
Newbie


Joined: 09 Apr 2017
Posts: 15
Location: Sevenoaks Kent


PostPosted: Mon Apr 16, 2018 8:51 pm    Post subject: Reply with quote

I have a Dec 2004 996 C4S Manual, I change the oil every 3000 miles and have it serviced every 24 months, I've had the car 4 years and done 11000 miles, forget what the book says, just change it every 3000, you know its done then, it costs about £45 and takes about 20 minutes.
 
  
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C4-STORM
Montreal


Joined: 29 Aug 2017
Posts: 577
Location: Hampshire

2004 Porsche 996 Carrera 4S

PostPosted: Mon Apr 16, 2018 8:52 pm    Post subject: Reply with quote

All makes sense especially the drive cycle requirements Thumb

Common sense should prevail and I know plenty of (inc. non-pork) drivers who insist on an annual oil change regardless of the manufacturers schedule.

Vehicle manufacturers also needed to demonstrate economy with less frequent or shorter services/inspections.

I just wonder if many of the bore score casualties were those 996’s which were serviced every other year.. Dont know
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EGTE
Imola


Joined: 06 Jul 2015
Posts: 798



PostPosted: Tue Apr 17, 2018 9:54 am    Post subject: Reply with quote

I see annual oil changes as a very reasonably-priced insurance policy against a big bill. Do the middle one yourself and they're at most about £120, even with the best Millers/whatever.
 
  
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