E90Post
 


GetBMWParts
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Off-Topic Discussions > Super Unleaded V Unleaded



Reply
 
Thread Tools Search this Thread
      03-16-2009, 05:28 AM   #1
SiKkBaSs
325i'in it
 
SiKkBaSs's Avatar
 
Drives: E90 325i
Join Date: Jun 2008
Location: Kent

Posts: 4,404
iTrader: (2)

Garage List
2006 325i  [0.00]
Super Unleaded V Unleaded

What is the difference between the two? I use super unleaded most of the time because apparently it is is better

For you who know, let me know what I should be using more often


ChYeah!
__________________
SiKkBaSs is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 05:59 AM   #2
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
The higher the octane rating the more engine knock is overcome, obviously this is only a good thing so in my opinion buy the highest octane offered!

Super varies from 97-99 (sometimes over 100 as well) depending on where you get it. VPower is 99, BP Ultimate is 99, Sainsbury's is 97, Tesco 99 etc.

Interestingly 4 star leaded petrol is 99 oct. and if you put lead additive (tetraboost) into petrol you can achieve over 100 octane petrol very easily, don't do this though because lead is bad for new cars
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 06:19 AM   #3
AlanQS
Colonel
 
AlanQS's Avatar
 
Drives: 320d SE Coupe
Join Date: Jan 2008
Location: Glasgow

Posts: 2,508
iTrader: (0)

Garage List
It's a few years ago but I ran super unleaded in my then new Rover 600 GSi for about eight months without realising that normal unleaded was fine.

I immediately switched to normal unleaded and thereafter noticed NO difference in fuel consumption or performance but did notice that I had thrown away a couple of hundred quid for nothing in the previous eight months.
__________________
AlanQS is offline   Scotland
0
Reply With Quote
      03-16-2009, 06:36 AM   #4
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
Thats interesting perhaps it is a case of "does your car need it?"

If 97-99 is recommended use it, maybe that is a better way of going about it? For my MR2 turbo I have been told by people who know MR2 T's not to use anything less than 99, my Boxster S I used 95 a couple of times and it ran REALLY rough.
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 06:38 AM   #5
M3-FAST
Defected to the dark side.....
 
M3-FAST's Avatar
 
Drives: BMW M5 LCi
Join Date: May 2007
Location: Stafford, UK

Posts: 5,790
iTrader: (11)

Garage List
Most high performance petrol engines are DESIGNED for high octane fuel - they will run at a lower octane (95RON) with reduced power. The electronic will automatically cater for the lower octane level.

My 325i (and yours!) needs high octane fuel for correct performance, as did my previous Audi A2 2.0T and my Toyota Celica VVTI. The Beemer performance difference is not quite as noticeable as my previous cars but is defo livelier with the better fuel in. I always run on BP ultima (99 I think). My Celica was as flat as a witches tit on 95RON fuel, and when it should have 'come alive' at 6500RPM it felt underpowered. The engine craved high octane fuel and was the only fuel it ran properly on.

Look inside your filler cap and it should tell you what is required, although if the same engine as mine, BMW spec 98RON or higher.

Older cars that are designed to run on normal fuel will notice little diiference running on higher octane fuel (such as Alan's old Rover) as the electronics have been designed to run on 95RON fuel.
M3-FAST is offline   England
0
Reply With Quote
      03-16-2009, 07:36 AM   #6
sheps
Colonel
 
sheps's Avatar
 
Drives: C63 AMG
Join Date: Feb 2007
Location: Cambs, UK

Posts: 2,396
iTrader: (2)

Send a message via MSN to sheps
I have, for as long as I can remember, had a fuel card; as such, my cars have almost exclusively been run on top juice.

I don't think I have ever run the beemer on std unleaded - it's always been optimax/V-power - so I can't comment on performance gains on this engine running it, because I have no basis for comparison.

However, my previous car (Impreza) always felt 'flat' on the 3 or 4 occassions (in 3 years) I was caught short and had to run a tank of non-V-power. It certainly felt like it lost some sparkle/responsivity and mid range grunt, although it could well have been in my mind, expecting it to be worse.

I have seen a number of magazine tests that show, with 'performance' cars (i.e. not your average 1.2l corsa shopping trolley) there are gains to be had.

I have never, nor would I, run supermarket fuel - too many horro stories locally of wrecked engines, and too many reports/too much evidence leading back to supermarket fuel to trust it.
__________________
Gone but not forgotten:
325i M Sport (E92), Black Sapphire, Coral Red Dakota, 19" 225's, Seat Heating, 6FL and de-badge

Replaced by 6.2 litres of AMG powered C class.
sheps is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 08:40 AM   #7
Budgie
Major
 
Drives: Soon to be a .....
Join Date: Nov 2007
Location: BEDS/CAMBS

Posts: 1,326
iTrader: (1)

Garage List
Im more into Jet engines lol...but i did watch and read these studies and yes Simon is right they do make a big difference to higher performance vehicles.

Average motor makes it run smoother with little gain.
__________________
RED SQUARE MASSIVE


Some say he is a tame racing driver...all i know is i call him Carsplosh....SHAMZIE
Budgie is offline   England
0
Reply With Quote
      03-16-2009, 09:00 AM   #8
MOB
Major
 
MOB's Avatar
 
Drives: Alpine White 118d M Sport
Join Date: Dec 2007
Location: Rushden UK

Posts: 1,350
iTrader: (4)

I always use V Power in my petrol cars - just through habit really.

However I also always use BP Ultimate diesel in my oil-burners - and that IMO is noticebly better than stock diesel - smoother, better MPG, better performance.
__________________
MOB is offline   England
0
Reply With Quote
      03-16-2009, 12:00 PM   #9
dxb335d
The Tarmac Terrorist
 
dxb335d's Avatar
 
Drives: E46 M3 CS
Join Date: Mar 2007
Location: ''Fandango Towers''

Posts: 29,262
iTrader: (3)

Garage List
Ive only ever run the DXB on the expensive denzil. When for a month i ran on shit juice. She felt FLAT as fuck.
__________________
M3 gone .... But I now have a M3 CS
dxb335d is offline   England
0
Reply With Quote
      03-16-2009, 12:03 PM   #10
jjbirch
Banned
 
jjbirch's Avatar
 
Drives: E60 530D M SPORT
Join Date: Feb 2006
Location: england

Posts: 2,927
iTrader: (0)

Garage List
i chuck anything into it when ever, allways felt them same and dyno well too, we did see a m5 running on the dyno which was putting out less bhp tryed a few times to get it up but no good, found out he had just fillied it with the cheap stuff
jjbirch is offline  
0
Reply With Quote
      03-16-2009, 12:13 PM   #11
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
VPower is the only way to go

Put 10 BP Ultimate in today, was going to fill but at my local petrol station it is only 97 RON not 99!!
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 12:25 PM   #12
dxb335d
The Tarmac Terrorist
 
dxb335d's Avatar
 
Drives: E46 M3 CS
Join Date: Mar 2007
Location: ''Fandango Towers''

Posts: 29,262
iTrader: (3)

Garage List
10 quid, must last only ten mins.
__________________
M3 gone .... But I now have a M3 CS
dxb335d is offline   England
0
Reply With Quote
      03-16-2009, 12:58 PM   #13
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
Yep lol enough to get to Shell at Derby and fill up with VPower

Not cheap 16mpg car isn't
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 01:08 PM   #14
dxb335d
The Tarmac Terrorist
 
dxb335d's Avatar
 
Drives: E46 M3 CS
Join Date: Mar 2007
Location: ''Fandango Towers''

Posts: 29,262
iTrader: (3)

Garage List
Tell me about it, Especially when denzil is over pound a litre.
__________________
M3 gone .... But I now have a M3 CS
dxb335d is offline   England
0
Reply With Quote
      03-16-2009, 01:11 PM   #15
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
Yep Petrol is getting that way again too.

Fact is diesel should be cheaper to buy but isn't, not good

Oh well lets look on the bright side we have lots of FUN with our cars so
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 01:12 PM   #16
jjbirch
Banned
 
jjbirch's Avatar
 
Drives: E60 530D M SPORT
Join Date: Feb 2006
Location: england

Posts: 2,927
iTrader: (0)

Garage List
yeh but at its peak down here it hit 1.30 for nomal diesel,must be 1.50 for the good stuff
jjbirch is offline  
0
Reply With Quote
      03-16-2009, 01:37 PM   #17
SoYank
Major General
 
SoYank's Avatar
 
Drives: 2009 E90 335i MT
Join Date: Mar 2006
Location: Brighton, Colorado

Posts: 7,496
iTrader: (1)

Garage List
Send a message via Yahoo to SoYank Send a message via Skype™ to SoYank
Isn't the term "unleaded" a misnomer? It should rightfully be called "non-leaded" since gasoline/petrol had lead added as a knock inhibitor. So, if it is missing an additive, why did unleaded fuel cost more than its leaded sibling?
__________________
2009 E90 335i Montego Blue Black Leather Burl Walnut 6MT US Spec
SatNav ZPP ZCW 6FL TPMS iDrive PDC HWS Xenons BMW Assist Power Rear Sunshade Logic 7
European Taillights Rear Foglamp OEM Alarm PicoTray DataToys XM-DVR Multi-view Processor
Quaife ATB LSD Short Shift Knob Hartge Anti-Roll Bars AP Racing Front Brakes 19" Style 269
SoYank is offline   United_States
0
Reply With Quote
      03-16-2009, 01:53 PM   #18
Porscha!
Should be on www.retrorides.com
 
Drives: Porsche 944
Join Date: Apr 2008
Location: Derbyshire

Posts: 3,573
iTrader: (0)

Garage List
Leaded is more expensive, at least now and is not readily availible either!

More expensive because the government / petrol station wants to make more money probably!
__________________
"FIRE UP THA PORRSCHAAH" - The 80's are back!

Front Engined Porsche
Porscha! is offline   United Kingdom
0
Reply With Quote
      03-16-2009, 03:42 PM   #19
AlanQS
Colonel
 
AlanQS's Avatar
 
Drives: 320d SE Coupe
Join Date: Jan 2008
Location: Glasgow

Posts: 2,508
iTrader: (0)

Garage List
Right. Next time I fill up, I will use the super duper diesel and see if it makes any difference at all. I'm not expecting it to, but we'll see what happens. It should cost me over 3 more for the tank full.
__________________
AlanQS is offline   Scotland
0
Reply With Quote
      03-16-2009, 03:43 PM   #20
dxb335d
The Tarmac Terrorist
 
dxb335d's Avatar
 
Drives: E46 M3 CS
Join Date: Mar 2007
Location: ''Fandango Towers''

Posts: 29,262
iTrader: (3)

Garage List
Fill through about 3 tank fulls.
__________________
M3 gone .... But I now have a M3 CS
dxb335d is offline   England
0
Reply With Quote
      03-16-2009, 03:46 PM   #21
beemerbird
Major General
 
beemerbird's Avatar
 
Drives: Merc diesel
Join Date: Oct 2007
Location: Yorkshire

Posts: 7,953
iTrader: (0)

Garage List
Quote:
Originally Posted by dxb335d View Post
Tell me about it, Especially when denzil is over pound a litre.
Carlos, I've just filled up and V power unleaded is 95.9 and the V diesel is 98.9. Not sure if it's because there's a Total garage opposite and a Morrisons within 2.5 miles so price wars etc.
beemerbird is offline   England
0
Reply With Quote
      03-16-2009, 03:47 PM   #22
dxb335d
The Tarmac Terrorist
 
dxb335d's Avatar
 
Drives: E46 M3 CS
Join Date: Mar 2007
Location: ''Fandango Towers''

Posts: 29,262
iTrader: (3)

Garage List
Quote:
Originally Posted by beemerbird View Post
Carlos, I've just filled up and V power unleaded is 95.9 and the V diesel is 98.9. Not sure if it's because there's a Total garage opposite and a Morrisons within 2.5 miles so price wars etc.

Im still paying 1.10 ish.

But at its peak round here was nearly 1.50.
__________________
M3 gone .... But I now have a M3 CS
dxb335d is offline   England
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 03:49 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST