MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: agmac on March 18, 2019, 09:36:35 am

Title: Unleaded or Superunleaded
Post by: agmac on March 18, 2019, 09:36:35 am
Hi
My car came with the orignal VW brochure which says 95RON fuel for GTI and Edition 30 but sticker on filler flap say 98RON.

Any advice out there on this one?
thanks
Title: Re: Unleaded or Superunleaded
Post by: Octoparrot on March 18, 2019, 07:39:10 pm
It'll run fine on either but I always use she'll v-power which I think is now 99 RON.
Title: Re: Unleaded or Superunleaded
Post by: Chesto18 on March 18, 2019, 07:47:24 pm
Tesco 99 works well. Runs much better on higher octane fuel. Seems to start better, pull better  and MPG seems better. No conclusive tests done though! Just perception.
Title: Re: Unleaded or Superunleaded
Post by: E8RNX on March 18, 2019, 08:29:59 pm
I vouch for Tesco Momentum 99. Much cheaper than V Power and car performs much better. I’ve seen dyno research with and without 99 RON and with premium unleaded it gives more HP
Title: Re: Unleaded or Superunleaded
Post by: richtung on March 19, 2019, 07:58:03 am
If you live near a Costo petrol station, you could go for their Super Unleaded. This is 99 Ron also.
I believe its the same stuff as Tesco Momentum - i read somewhere that the fuel is from the same tankers / distributors.

Rich
Title: Re: Unleaded or Superunleaded
Post by: Dogma on March 19, 2019, 08:41:17 am
Shell v-power all day long, wouldn’t touch Tesco’s.


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Title: Re: Unleaded or Superunleaded
Post by: fakie1977 on March 19, 2019, 09:20:58 am
Shell v-power all day long, wouldn’t touch Tesco’s.


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Why?


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Title: Re: Unleaded or Superunleaded
Post by: Dan_FR on March 19, 2019, 09:43:18 am
Costco fuel is 97 RON, not 99. have a look under the 'What products do you sell' section: https://www.costco.co.uk/fuel-q-and-a

Nothing wrong with Momentum 99. I've used it for years, noticed no difference in terms of timing correction on my Leon. Was previously a regular user of V-Power until my local store closed and the only store within a reasonable distance is a Motorway services
Title: Re: Unleaded or Superunleaded
Post by: Dogma on March 19, 2019, 10:13:10 am
Shell v-power all day long, wouldn’t touch Tesco’s.


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Why?


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I get way less miles using Tesco Fuel ⛽️
In any of my cars, hence my statement.


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Title: Re: Unleaded or Superunleaded
Post by: richtung on March 19, 2019, 11:04:07 am
Costco fuel is 97 RON, not 99. have a look under the 'What products do you sell' section: https://www.costco.co.uk/fuel-q-and-a

Nothing wrong with Momentum 99. I've used it for years, noticed no difference in terms of timing correction on my Leon. Was previously a regular user of V-Power until my local store closed and the only store within a reasonable distance is a Motorway services

Dan - as far as im aware, Costco used to sell 97 Super Unleaded but now 99 Ron - it certainly the case at Costco Chadderton and Trafford.

Rich
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 19, 2019, 12:37:38 pm
98 on the petrol flap is the recommended RON.  95 RON in smaller writing is the minimum.

A standard engine will be fine on either.  Remapped engines should probably stick to 98/99 to avoid summer detonation.

Personally I use Shell because it's relatively expensive, therefore much quieter forecourts.  Every week where I live it's the same..... hoards of supermarket morons blocking the road at Tesco because of their must have 'Friday fill up'  :doh:   I'd rather pay a few quid more at shell or BP than sit in that!
Title: Re: Unleaded or Superunleaded
Post by: jgalla89 on March 19, 2019, 02:56:25 pm
I use Sainsbury's super unleaded (97 Ron?) and it runs fine. I did put regular Unleaded in when I first got it and noticed it was sluggish and didn't seem to run well on tick over.

I have used V-Power but its like 20p more near me and I honestly couldn't tell the difference in the way it ran or the MPG.
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 19, 2019, 03:27:07 pm
You won't notice a change in mpg between 95 - 99.  There is a misconception that some pump fuels are more 'calorific' than others, but it's not true.  Petrol is petrol.  The only thing that varies is resistance to knock. 

Ideally everyone should be using 98, as per the fuel flap.  That is the test fuel VW mapped the engine to run on. To guarantee the minimum claimed power (197ps & 230ps) in all weathers, it's the fuel to use.  95 will work, but even the handbook states (paraphrased) "reduced power...." in particular, on very hot days and steep hills in tall gears.

The only fuels that do have different 'calorific' levels to petrol are diesel, ehtanol, nitromethane, and some race fuel blends.

In summary - use 98/99  :smiley:




Title: Re: Unleaded or Superunleaded
Post by: PatchySan on March 23, 2019, 02:47:48 pm
Dan - as far as im aware, Costco used to sell 97 Super Unleaded but now 99 Ron - it certainly the case at Costco Chadderton and Trafford.
Rich

My local Costco used to sell 99 RON Super Unleaded, went back there a few days ago to top up and was wondering why the fuel had suddenly gone 5p a litre cheaper only to realise on the fuel pump label they now downgraded the fuel to 97 RON, you can just about see the old residue of where the old 99 RON label used to be.

So if you're regular Costco fuel customer and must use 99 RON due to some custom mapping, double check on the label before you fill up!
Title: Re: Unleaded or Superunleaded
Post by: agmac on March 25, 2019, 08:21:38 am
Thanks everybody for replying. My local fuel station is Tesco so I've been using 99RON Momentum so far. Next nearest is rip off Shell motorway service station. Good to know that if I can't get 99RON then 95RON will do and I won't break the car.

Loving the Edition 30 by the way - awesome car, even in standard spec.
Title: Re: Unleaded or Superunleaded
Post by: probedb on March 27, 2019, 08:48:52 am
Every week where I live it's the same..... hoards of supermarket morons blocking the road at Tesco because of their must have 'Friday fill up'  :doh:

You'd think Tesco would've learned this when building new forecourts but it appears not. That's why I go late at night or very early in the morning :D
Title: Re: Unleaded or Superunleaded
Post by: bobby_fodge on March 27, 2019, 10:10:59 am
I've never bothered to read the sticker on the inside of the fuel filler flap until I saw this thread. I just assumed it said use 95.

Title: Re: Unleaded or Superunleaded
Post by: Tin Robot on March 27, 2019, 07:39:09 pm
I only ever fill up with Shell V Power (99RON). Use it for my other car as well.

It is a brand I trust and the quality of its additives and detergents has never been questioned (unlike tesco fuel). Worth paying a few pounds more that may pay dividends down the road. We are driving cars that are getting old. My Golf is 13 years old. My 911 is 16 years old. So every bit helps - mechanical sympathy, warming the engine before hoofing it, decent oil, decent petrol etc etc - will all help keep the car in good condition.
Title: Re: Unleaded or Superunleaded
Post by: richtung on March 27, 2019, 08:45:54 pm
Costco fuel is 97 RON, not 99. have a look under the 'What products do you sell' section: https://www.costco.co.uk/fuel-q-and-a

Nothing wrong with Momentum 99. I've used it for years, noticed no difference in terms of timing correction on my Leon. Was previously a regular user of V-Power until my local store closed and the only store within a reasonable distance is a Motorway services

@Dan_FR (https://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=9513) is right, Costco super unleaded is now 97 Ron. They must have switched supplier at some point.
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 29, 2019, 09:54:55 am
Every week where I live it's the same..... hoards of supermarket morons blocking the road at Tesco because of their must have 'Friday fill up'  :doh:

You'd think Tesco would've learned this when building new forecourts but it appears not. That's why I go late at night or very early in the morning :D

The trouble is, a lot of Supermarkets were built in the 80s/90s and coped OK with 80s/90s traffic......but not anymore.  Way too many people on this little rock.   The amount of fuel people waste queuing up at supermarkets would balance out just driving to a much quieter Shell or BP  :grin: 
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 29, 2019, 09:59:16 am
I only ever fill up with Shell V Power (99RON). Use it for my other car as well.

It is a brand I trust and the quality of its additives and detergents has never been questioned (unlike tesco fuel). Worth paying a few pounds more that may pay dividends down the road. We are driving cars that are getting old. My Golf is 13 years old. My 911 is 16 years old. So every bit helps - mechanical sympathy, warming the engine before hoofing it, decent oil, decent petrol etc etc - will all help keep the car in good condition.

I worked it out once and the difference over 55 litres of Tesco 99 versus V Power was only a few quid where I live.  Certainly not a difference worth being in a zombie queue over, but tight people will be tight.

I've used Shell Optimax and V power for bloody years.  On my old port injected engines, it definitely kept everything inside pretty spotless.  Can't say the same for direct injection obviously but it is a consistently good fuel.  Esso and BP 97 are also good, consistent fuels.  Consistency is the key.  I always found supermarket fuel to be patchy in quality.  I always knew straight away as the engine would develop a lumpy idle where it was previously smooth on Shell.

Title: Re: Unleaded or Superunleaded
Post by: bobby_fodge on March 29, 2019, 10:39:58 am
I used to be mates with someone who was into his cars and worked in a lab at a refinery. He said he'd never put supermarket fuel in his cars. I can't remember the reason though so this is a fairly pointless post but hey, I'm at work. 
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 29, 2019, 12:04:37 pm
Me too, best way to spend the time  :grin:

Supermarkets tend to buy from the cheapest supplier, so you don't know what you're getting from one week to the next.  Whereas Shell, BP, Esso etc is always the same.....or so I've heard.

Remember the Morrison's petrol issue from 2006 ish?  It was contaminated with silicon and Morrisons ended up paying for 1000s of lambda sensors to be replaced  :grin:   Yeah, ever since then.....I've steered well clear of Supermarket fuel, unless there was no other choice.
Title: Re: Unleaded or Superunleaded
Post by: rich83 on March 29, 2019, 05:23:16 pm
I run mine on a mix of Tesco 99 and Vpower... probably use Tesco 99 about 80% of the time. No running issues at all, seems happy on both.
Title: Re: Unleaded or Superunleaded
Post by: MIJ_JAGGER on March 29, 2019, 06:15:10 pm
Wife can be forgetful

(https://uploads.tapatalk-cdn.com/20190329/34f19aaf59f09fbc5f84d4ca8b78f783.jpg)
Title: Re: Unleaded or Superunleaded
Post by: pudding on March 29, 2019, 08:15:00 pm
Like it  :grin:
Title: Re: Unleaded or Superunleaded
Post by: bobby_fodge on March 29, 2019, 08:19:49 pm
She can have my baby but she is NEVER driving my car
Title: Re: Unleaded or Superunleaded
Post by: Eighteen88 on March 29, 2019, 08:27:02 pm
Wife can be forgetful

(https://uploads.tapatalk-cdn.com/20190329/34f19aaf59f09fbc5f84d4ca8b78f783.jpg)


Brilliant......ordered one for myself  :happy2:
Title: Re: Unleaded or Superunleaded
Post by: rich83 on March 30, 2019, 12:21:41 am
They do V-power diesel too....   :evilgrin:
Title: Re: Unleaded or Superunleaded
Post by: Dogma on March 31, 2019, 02:01:19 pm
They do V-power diesel too....   :evilgrin:


Yuck


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Title: Re: Unleaded or Superunleaded
Post by: Tin Robot on March 31, 2019, 09:17:56 pm
Wife can be forgetful

(https://uploads.tapatalk-cdn.com/20190329/34f19aaf59f09fbc5f84d4ca8b78f783.jpg)

Superb - ordered these for both cars :)
Title: Re: Unleaded or Superunleaded
Post by: muff1991 on April 01, 2019, 09:09:49 am
She can have my baby but she is NEVER driving my car
Brilliant!! I feel I can relate to this a lot! :signLOL:
Title: Re: Unleaded or Superunleaded
Post by: kdfredi on April 08, 2019, 01:28:23 am
Shell V Power definitely has a noticeable difference from others.