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Poker2009
Imola


Joined: 09 Sep 2009
Posts: 851
Location: London


PostPosted: Sun Apr 29, 2018 6:42 pm    Post subject: Reply with quote

pcat wrote:
Ok i'll bite

Whats the logic for using a thicker oil than spec as mileage increases? Mines at 62k miles, 10k since last service, had standard oil all its life and never had to add a drop. I can see why you might do it if you're topping up all the time, but otherwise it makes no sense to me


Thin oil is fine when the engines are new.

20k+ miles 5W40
60k+ miles 10W50

And oil changes every year and/or 5-6k miles.

(My opinion ofcourse!)
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Porsche 997.1 C2S Basalt Black
 
  
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neil_911
Monza


Joined: 04 Dec 2016
Posts: 153
Location: Doncaster


PostPosted: Sun Apr 29, 2018 7:55 pm    Post subject: Reply with quote

/\

What the man said, 0w40 is an extremely thin oil and my theory is its too thin once an engine wears in abit.

The weight's aren't massively different between 0 and 10, Remember its only cold and warm viscosities, But the difference in my Gen 2 made the difference between seeing oil consumption, to removing it entirely with the change of oil grade.

Tolerances within the engine change over mileage, Thicker grade fills the spaces - thin just leaks through/burnt easier.

I also think a thicker grade works better with ageing oil air separators, more dense oil mist etc.


I may be talking BS, but that's what i reckon goes on. The rest is wizardry Laughing
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Basalt Black 997.2 C2S PDK - for the weekends
Mercedes S500 5.0L V8 - for the commute
 
  
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Poker2009
Imola


Joined: 09 Sep 2009
Posts: 851
Location: London


PostPosted: Sun Apr 29, 2018 8:07 pm    Post subject: Reply with quote

neil_911 wrote:
I may be talking BS, but that's what i reckon goes on. The rest is wizardry Laughing


I have either wasted quite a lot of money on oil over the years, or the engine will go on for longer than most. Time will tell if it pays off i guess..
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boardingnath997
Trainee


Joined: 28 Sep 2016
Posts: 60



PostPosted: Mon Apr 30, 2018 9:39 am    Post subject: Reply with quote

This is good timing as I need to buy a new batch of top up oil. I'm trying to find a 5w or 10w Mobil 1 Oil, however there doesn't appear to be much available. Has anyone got some recommendations on where I could get some?
 
  
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systech1
Trainee


Joined: 10 Jul 2016
Posts: 88
Location: Adelaide, South Australia


PostPosted: Mon Apr 30, 2018 10:47 am    Post subject: Reply with quote

Mobil 1 5w50 should be widely available and is approved by Porsche for the 997
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Long time Porsche fan. Previous cars include 911T 2.2, 911E 2.2, Carrera 3.0, 986 Boxster S. Current car is 997.2S Manual (with PSE, H&S Backbox bypass, Sports Chrono, SSK, Carrera Sports wheels, Sport Design steering wheel etc.)
 
  
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Tobyone
Monza


Joined: 20 Jan 2018
Posts: 191
Location: Somewhere else


PostPosted: Mon Apr 30, 2018 7:53 pm    Post subject: Reply with quote

I use Mobil 1 5w40 in my 997 with 390000 miles on it.

Change it more regularly than the recommended, may be over kill but whats a few quid spent on extra oil which should help with any wear over not changing it.
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