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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
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Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

The US (And Canada, Brazil and a few more) use AKI instead of RON. So premium US 91-94 equals UK 97-100 Wink

And despite that as good as equality, it is not uncommon for similar engines to have a slight detune for the US market as well.

Post #592797 30th Apr 2021 4:21pm
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Haylands



Member Since: 04 Mar 2014
Location: Brantingham, East Yorkshire
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England 2012 Range Rover Autobiography 5.0 SC V8 Ipanema Sand

I dunno, they call everything the wrong name, have a different size of gallon and now can't sort out an octane.... Whistle Laughing Pete

__________________________________________________
2012MY L322 Range Rover Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior
2002 L322 Range Rover Vogue 4.4 V8 Epson Green, Ivory Interior (Fatty Offroader) Now Gone
-Project Fatty off roader-

Post #592805 30th Apr 2021 6:12pm
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MPx



Member Since: 29 Jul 2011
Location: South Somerset
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Mulcher wrote:
Regular 95 octane for my 4.2 SC and there’s never been a hint of pinking.


...and so there shouldn't be. 95 is the minimum recommended by LR and they will have set up the relevant ECU to be able to use it without issue. But that same ECU would recognise if better fuel is used (via knock sensors etc) and adjust itself to take advantage. I accept it will be a marginal improvement but it will be real. You also get a marginal but real MPG improvement, and other minor benefits. Mike - MPx

2017 5.0 V8 Supercharged SVAutobigraphy Dynamic SVO Palette Grey (2021-...)
2012 5.0 V8 Supercharged Autoboigraphy Orkney Grey (2017-2021)
2007 4.2 V8 Supercharged Vogue SE Tonga Green (2012-2017)
2002 4.4 V8 Vogue Bonnatti Grey (2008-2012)

Post #592807 30th Apr 2021 6:18pm
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
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Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

Haylands wrote:
I dunno, they call everything the wrong name, have a different size of gallon and now can't sort out an octane.... Whistle Laughing


Hahahaha like I totally agree. They can’t even speak proper English like the queen init.

Post #592813 30th Apr 2021 6:32pm
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Gordo51



Member Since: 16 Jul 2018
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Canada 2008 Range Rover Supercharged 4.2 SC V8 Barolo Black

Well we do have a proper gallon in Canada but you know we have been metric for ages. Here I use Chevron Premium which I think is 99. They have a. Supper Premium but don't use that. All these cars have knock sensors so I wouldn't think you would get any pinging, at least not for long. If you going up a steep hill or towing a load and the engine detected pinging it would retard the ignition and you would end up with less power.

Post #593011 3rd May 2021 4:16am
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SS.Lyria



Member Since: 01 Dec 2016
Location: London
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United Kingdom 2014 Range Rover Autobiography 5.0 SC V8 Loire Blue

As recently documented on here, I had an injector fail on my 5.0 L405.

I doubt very much if running exclusively on Super would have made a difference, but who knows!!

I fill up at my local garage which has 24 pumps available, but only 6 have Super. The worst thing being they’re all at the front of the line, which means at busy times it can be a PITA to get on them.

My choices moving forward are to fill up at unsociable hours or be a nuisance at fill up time Neutral

Post #593034 3rd May 2021 11:10am
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LT



Member Since: 13 Mar 2017
Location: South West
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2017 Range Rover Autobiography SDV8 Carpathian Grey

I have the SDV8, but I have owned SC V8’s before and would definitely run an SC FFRR on Shell V-Power.

Post #593037 3rd May 2021 12:08pm
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Billie



Member Since: 12 Oct 2020
Location: south-west
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England 2006 Range Rover Vogue 4.2 SC V8 Buckingham Blue

[quote="Strider"]Always use use Shell V-Power Premium in my 4.2 SC Thumbs Up, never used anything else so cant compare.

Same here Thumbs Up 1983 Range Rover Classic red CHP 723Y
H81 MFX Classic
1995 P38 4.6 HSE
2006 L322 V8 Vogue supercharged

Post #593042 3rd May 2021 1:50pm
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Haylands



Member Since: 04 Mar 2014
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England 2012 Range Rover Autobiography 5.0 SC V8 Ipanema Sand

Back to ASDA it is then....

https://www.which.co.uk/news/2020/09/super...7Q67SoOyIo Pete

__________________________________________________
2012MY L322 Range Rover Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior
2002 L322 Range Rover Vogue 4.4 V8 Epson Green, Ivory Interior (Fatty Offroader) Now Gone
-Project Fatty off roader-

Post #593828 10th May 2021 9:57pm
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MPx



Member Since: 29 Jul 2011
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Err not really. My takeaways from that were:

All base fuels are made to the same standard - we knew that, its got a BS number and everything.
All brands add different proprietary additives and more of them are added to "Super" - yep that's what we all have said.
All modern UK cars can run on 95Ron without issue, but the best and most powerful will run better on "Super"- yep we said that too.
If you want to save money on fuel buy an economical car and drive economically - Good advice. Mike - MPx

2017 5.0 V8 Supercharged SVAutobigraphy Dynamic SVO Palette Grey (2021-...)
2012 5.0 V8 Supercharged Autoboigraphy Orkney Grey (2017-2021)
2007 4.2 V8 Supercharged Vogue SE Tonga Green (2012-2017)
2002 4.4 V8 Vogue Bonnatti Grey (2008-2012)

Post #593835 10th May 2021 11:11pm
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AJGalaxy2012



Member Since: 11 Jun 2018
Location: Gainsborough
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United Kingdom 2012 Range Rover Vogue SE 4.4 V8 Bonatti Grey

Not quite
"All modern UK cars can run on 95Ron without issue, but the best and most powerful will run better on "Super"- yep we said that too."

It actually said was

"the key difference between regular and ‘super unleaded’ is its higher octane rating. In the UK, normal unleaded is rated at 95 RON (Research Octane Number) Whereas super unleaded is normally between 97 to 99 RON.

Essentially this means the super-unleaded fuel can be compressed more in an engine without prematurely igniting. Using normal unleaded in cars requiring higher octane fuel can cause engine knock – where the fuel fires before the completion of the compression cycle (you may hear it as a ‘ping’).

There’s no harm in using super unleaded, even if high octane isn’t recommended. But you’re unlikely to detect any benefit unless your car specifically requires it – normally very high-performance and some imported vehicles."

Your engine and was designed to run on 95 RON, you will see very little difference between super and standard unleaded other than the placebo effect. The fuel companies brainwashing works well LOL BMW i3 Electric Car (170 bhp mobility scooter)
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Post #593841 11th May 2021 5:20am
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Dommo



Member Since: 25 Feb 2021
Location: Swindon
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United Kingdom 2007 Range Rover Supercharged 4.2 SC V8 Java Black

I've got some cars that run on V-Power, and some that get regular. V-Power is for performance reasons for me - I've got one car specifically mapped on it and the other uses it because it gets premixed with 2 stroke oil so it helps combat the effective RON drop of it.

The Range Rover gets the standard stuff as at less than 100bhp per litre, I don't see it as trying particularly hard so shouldn't be anywhere close to knocking.

All the cars get Shell fuels rather than supermarket stuff to take advantage of some of the additives. I've seen the inside of an engine that did 140k of supermarket fuel Shocked It was considerably better the next time I took the engine apart having run it on V-Power.

Shell just happens to be my local station rather than an affection for the brand though.

Post #593845 11th May 2021 7:35am
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MPx



Member Since: 29 Jul 2011
Location: South Somerset
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United Kingdom 

AJGalaxy2012 wrote:
Not quite

But you’re unlikely to detect any benefit unless your car specifically requires it – normally very high-performance and some imported vehicles."

Your engine and was designed to run on 95 RON, you will see very little difference between super and standard unleaded other than the placebo effect. The fuel companies brainwashing works well LOL


And what I said in an earlier post was "a marginal but real improvement". Powerful cars like ours have knock sensors - the ECU can advance ignition until knock is detected. Advanced ignition under hard acceleration will give a marginal increase in performance. Our cars have this, indeed most cars with an ECU do, that's what the mapping is all about. I completely agree that for many/most this marginal increase isn't "worth" it. My point is that paying over £100k for the car to get at best 26mpg isn't "worth" it over a not much lesser vehicle if money is the significant deciding factor. But if you've made the leap with the big bucks to get "the best", then paying a few cents more for the best fuels doesn't seem like much of an extra step to me - indeed the opposite, if it was worth an extra £30k to get 550bhp instead of 500bhp then the real equivalence of an an extra handful of bhp under hard acceleration will be cheap at £10 per fill.

...and yes, I've fallen for it...my nephew works for Shell Razz Mike - MPx

2017 5.0 V8 Supercharged SVAutobigraphy Dynamic SVO Palette Grey (2021-...)
2012 5.0 V8 Supercharged Autoboigraphy Orkney Grey (2017-2021)
2007 4.2 V8 Supercharged Vogue SE Tonga Green (2012-2017)
2002 4.4 V8 Vogue Bonnatti Grey (2008-2012)

Post #593850 11th May 2021 8:16am
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JamesD



Member Since: 21 Jan 2013
Location: Worcestershire
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United Kingdom 2016 Range Rover Vogue TDV6 Corris Grey

I think if it was me I would stick 95 in it, let's be honest an SC is not exactly a sports car and could anyone really feel the few extra HP that super unleaded is going to give you? I have driven a handful of cars where 98+ is specified by the manufacturer, the only reason I stick to a fuel grade is when the tune expects it (I had an RS4 once that hated 95RON fuel).

5th Gear did a great fuel comparison video a few years back on a Golf GTI, its worth a look...then make your own mind up.
https://www.youtube.com/watch?v=d8L-X89duEs 2021 L405 Vogue D300 (Ordered)
2016 L405 Vogue 3.0TDV6 (Sold)

Post #593852 11th May 2021 9:01am
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AJGalaxy2012



Member Since: 11 Jun 2018
Location: Gainsborough
Posts: 839

United Kingdom 2012 Range Rover Vogue SE 4.4 V8 Bonatti Grey

Just how much time can you really be at full throttle? It’s the only time any difference exists, I doubt that the extra horsepower can be sensed by anyone to be honest. BMW i3 Electric Car (170 bhp mobility scooter)
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Post #593854 11th May 2021 9:42am
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