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Mookin
Newbie


Joined: 31 Oct 2018
Posts: 38
Location: Lancashire


PostPosted: Fri Nov 22, 2019 5:17 pm    Post subject: Not another what oil question... 110,000 5W 40? Reply with quote

Sorry, another what oil query but related to mileage in my defence..

Car coming up for 12 months in my ownership and about to turn 110,000 miles. Due it’s annual service. I have only done 3000 miles or so this year.

Car has been running on 0W 40 but was wondering whether to change to 5W 40 (or another rating?)with the higher mileage?

Thoughts please n ta.
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kas750
Shanghai


Joined: 31 Mar 2013
Posts: 4593
Location: Chorley lancashire

2006 Porsche 911

PostPosted: Fri Nov 22, 2019 5:33 pm    Post subject: Reply with quote

Yes definitely.
Most recommend millers but I would say do your research and reach your own conclusion.
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7333
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Fri Nov 22, 2019 5:37 pm    Post subject: Reply with quote

Running mine on Millers 10w50, per Hartech advice.
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7593
Location: Brighton


PostPosted: Fri Nov 22, 2019 8:05 pm    Post subject: Reply with quote

I would advise 5W/40 mobil 1 oil .. it's what we would be using any ways ..

You can go 10W/50 but i would prefer a step at a time instead of a big jump so perhaps start with 5W/40 .
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Mookin
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Joined: 31 Oct 2018
Posts: 38
Location: Lancashire


PostPosted: Fri Nov 22, 2019 10:53 pm    Post subject: Reply with quote

Thanks guys, 5W 40 tis.
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noel993
Silverstone


Joined: 15 Jan 2009
Posts: 111
Location: Manchester


PostPosted: Sat Nov 23, 2019 1:13 am    Post subject: 996 c4s Reply with quote

Hi i use 10/60 Castrol titanium mines done 83,000 is that ok?
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17144
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Nov 23, 2019 9:44 am    Post subject: Reply with quote

I switched to shell helix 5 40 around 125k after running on nothing but 0 40 mobil 1.
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dc2100k
Newbie


Joined: 28 Oct 2019
Posts: 48



PostPosted: Sat Nov 23, 2019 12:29 pm    Post subject: Reply with quote

Gulf Formula GX 5w40 on sale at ECP. 20 litres for £37 if you use the code BF19.

https://www.eurocarparts.com/p/gulf-formula-gx-5w-40-engine-oil-20ltr-521774135
 
  
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FRZ 911
Österreich


Joined: 19 Jun 2015
Posts: 901
Location: Northern Ireland

2007 Porsche 997 Carrera 4S

PostPosted: Sat Nov 23, 2019 12:31 pm    Post subject: Reply with quote

Similar here. Used Mobil 0W 40 until 80k then switched to Petronas 5W 40.
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Rojdog
Silverstone


Joined: 08 Nov 2018
Posts: 138
Location: Essex


PostPosted: Sat Nov 23, 2019 2:49 pm    Post subject: Reply with quote

The only difference between a 0w-40 and a 5w-40 oil is the viscosity at cold temps. The 0w-40 flowing easier when cold but once up to operating temp they will be exactly the same.
 
  
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Lukec4s
Newbie


Joined: 20 Jul 2018
Posts: 47
Location: Watford


PostPosted: Sat Nov 23, 2019 4:28 pm    Post subject: Reply with quote

About to have an oil
Change too. I have been told 5/40 over 0/40 for older cars.. can anyone explain the benefits?

Thanks
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Mookin
Newbie


Joined: 31 Oct 2018
Posts: 38
Location: Lancashire


PostPosted: Sat Nov 23, 2019 10:46 pm    Post subject: Reply with quote

Mobil vs Shell vs Gulf vs Petronas vs Castrol vs Millers!!

Going to go 5W 40 but what brand? Surely they are all similar spec?!

Some great Black Friday deals on some..
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17144
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Nov 23, 2019 11:23 pm    Post subject: Reply with quote

I'd recommend the shell helix - only around £25 for 5 litres (CPFL using their discount code) and on the Porsche approved list.
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kurlykris
Magny-Cours


Joined: 30 Jun 2014
Posts: 2576
Location: Warwickshire


PostPosted: Sat Nov 23, 2019 11:38 pm    Post subject: Reply with quote

I use Millers Nanodrive CFS 5W40 NT+, it`s expensive but I drive my Porsches hard and track them, changing the oil before each trackday.
For normal road use only I would say good quality brand 5W40 and change every 6 months, cheaper nice new clean oil is better than dirty old expensive oil Thumb
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skinny_monkey
Nürburgring


Joined: 16 Sep 2014
Posts: 464



PostPosted: Sun Nov 24, 2019 11:27 am    Post subject: Reply with quote

I use 0W-40 on my 120k car. Oil pressure isn't telling me i need anything different, still around 2 bar at hot idle
 
  
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DarthFaker
Newbie


Joined: 13 Jun 2019
Posts: 27
Location: Brighton, UK


PostPosted: Sun Nov 24, 2019 6:05 pm    Post subject: Reply with quote

skinny_monkey wrote:
I use 0W-40 on my 120k car. Oil pressure isn't telling me i need anything different, still around 2 bar at hot idle


When your engine is so worn you can't achieve the correct oil pressure using the standard grade oil, you need a rebuild not a thicker oil.
 
  
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skinny_monkey
Nürburgring


Joined: 16 Sep 2014
Posts: 464



PostPosted: Sun Nov 24, 2019 11:54 pm    Post subject: Reply with quote

DarthFaker wrote:
skinny_monkey wrote:
I use 0W-40 on my 120k car. Oil pressure isn't telling me i need anything different, still around 2 bar at hot idle


When your engine is so worn you can't achieve the correct oil pressure using the standard grade oil, you need a rebuild not a thicker oil.

I understand your point (once you are showing low oil pressure, thicker oil is just a sticking plaster). Im not saying you need to wait until you're showing 1 bar and your engine sounds like a bag of nails before you consider using a different oil. Im just saying, for a road car that lives in the UK, and shows 2 bar at hot idle, why do i need a thicker oil?

I'm not against using different oils from manufacturers spec, my track day MX5 turbo runs 10W-60, but doesn't do much in the winter, and gets driven hard i.e. the application requires the thicker oil (it's also a bit worn out at 180k miles!!)

In any case, if you are going for a thicker oil, I'd go 10W-50 rather than a 5W-40. As a previous poster stated, at full operating temperature a 5W-40 is in the same viscosity band as a 0W-40 but thicker at lower temps, so doesn't actually offer that much benefit. (5W-50 is theory is better than 10W-50 but it requires more viscosity modifier to keep the higher temp viscosity and so is more prone to shear thinning over time, so it won't keep its high temp viscosity and will drop back towards a 5W-40)
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17144
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Nov 25, 2019 7:47 am    Post subject: Reply with quote

All the oil I've ever used is *w 40 (so same viscosity up at temp.) and I hover around 0.8 bar at idle and have done for 6 years (& 57k miles). Amazes me how much variation I see on the pressure at tickover with different members. All I can put it down to is inaccuracy of gauges. Although the gauge isn't there as comparison of other gauges but more variation overtime of your own gauge.

Dont know
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Mookin
Newbie


Joined: 31 Oct 2018
Posts: 38
Location: Lancashire


PostPosted: Mon Nov 25, 2019 12:38 pm    Post subject: Reply with quote

Alex, can I ask what your reasoning was for moving from 0W 40 to 5W 40? Would be well happy if mine gets to your mileage with nothing major engine wise. Ta
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bullet-proof_biscuit
Newbie


Joined: 10 Jun 2019
Posts: 44



PostPosted: Mon Nov 25, 2019 1:03 pm    Post subject: Reply with quote

I get down to 1.2 bar at hot idle when the oil goes over 100 celcius.

I will be changing to 10w50 Millers our of pure fear, and because low oil pressure gives me the gibbles.
 
  
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