Go Back   Subaru Impreza Forum - WRX STI Rally Performance Tuning > Subaru Impreza Technical Area > Technical General

Subaru Impreza Forum

Fuel Quality
Reply
 
LinkBack Thread Tools Display Modes
Old 17 Dec 2009, 07:41 PM   #1 (permalink)
Cool Scooby
 
dan50's Avatar
 
Join Date: Sep 2009
Location: At home licking my windows
Posts: 348
Fuel Quality

Having read a number of posts which mention bad batches of fuel I wondered what peoples thoughts are on this.
Is it possible to get bad batches, does it depend on how it is stored,can you get the dregs out of a tank at a petrol station and could it be season dependent, by that I mean more or less condensation in the petrol stations tanks(assuming that condensation can build in their tanks).



Cheers Dan
__________________
YOU DIRTY DIRTY OLD MAN!!!!!!!!
Offline   Reply With Quote
Old 17 Dec 2009, 07:58 PM   #2 (permalink)
Obsessed Scooby
 
stiimpreza1984's Avatar
 
Join Date: Jul 2008
Location: Cork, Ireland
Posts: 7,475
Re: Fuel Quality

Good thread always wondered how long does the fuel be stored in their tanks suppose not very long if its a busy garage, have had a couple of cars before where water got into fuel from dodgy petrol stations. Also I wonder how long does it take for the octane rating to drop from 99ron and so on if it was in the petrol stations tanks awhile?????? And do they test the fuel regurley to be sure that its a true mix for a 99ron fuel say????
__________________
SEE NO EVO HEAR NO EVO!
Offline   Reply With Quote
Old 17 Dec 2009, 11:23 PM   #3 (permalink)
Senior Scooby
 
RAianM's Avatar
 
Join Date: Nov 2008
Location: Bournemouth
Posts: 1,107
Re: Fuel Quality

Never thought of it before but now you mention it good point.
__________________
"RA is the only way"
Offline   Reply With Quote
Old 18 Dec 2009, 08:16 AM   #4 (permalink)
jd
Obsessed Scooby
Paid & Proud
 
jd's Avatar
 
Join Date: Mar 2005
Location: here
Posts: 6,414
Send a message via MSN to jd
Re: Fuel Quality

It can also be down to manufacturing tolerances.
__________________
blah blah blah
Offline   Reply With Quote
Old 18 Dec 2009, 05:28 PM   #5 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
Re: Fuel Quality

the two main 99 ron fuels are tesco 99 and v power, rest tend to be 97 or 98 ron.

tesco is mixed on the forecourt, normal is put into the tank and then an actain booster added. problem with this is the mix isn;t controlled 100% get the dregs in the bottom and its a world of hurt.

vpower is refined to 99 ron, then mixed with aditional adatives at the refinery before testing and loading into the tanker.

both can suffer from to high water content or other contamination if the tanks are not looked after or cleaned properly.
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 18 Dec 2009, 06:50 PM   #6 (permalink)
Cool Scooby
 
dan50's Avatar
 
Join Date: Sep 2009
Location: At home licking my windows
Posts: 348
Re: Fuel Quality

Cheers for the info Tidgy if your car developed a problem which is the fuels fault would you have any comeback from a petrol station or would it be too hard to prove it was their fault?
__________________
YOU DIRTY DIRTY OLD MAN!!!!!!!!
Offline   Reply With Quote
Old 18 Dec 2009, 07:10 PM   #7 (permalink)
Cool Scooby
 
QUINNtheDAWG's Avatar
 
Join Date: Aug 2009
Location: drumquin NI
Posts: 247
Re: Fuel Quality

also youve got to remember that fuel degrades over time and more quickly on the tank also remember more weight = heavy car= <mpg <power etc so i never over fill my tank usually about half to 3/4 full
i have been the victim of dodgy fuels unfortunately there much dodgyness here on the irish border what pisses me off is all the gas thats in fuel delevery
also sometime the cars run great and the fuel last for ages and somethime the fuel buens up and the car runs like my grannny
also how accurate are the pumps i have a 2 gallon tank and i filled this the last time i went for fuel the tank showed 2 gallon but the oumo showed 2 and a 1/4 gallon i challenged the manager and he gave me my money back
barsteward
lets face the chances are we get fingered one way or another
Offline   Reply With Quote
Old 18 Dec 2009, 07:28 PM   #8 (permalink)
Dedicated Scooby
 
brumbrum's Avatar
 
Join Date: Oct 2004
Location: Cardiff
Posts: 1,975
Re: Fuel Quality

Quote:
Originally Posted by Tidgy View Post
tesco is mixed on the forecourt, normal is put into the tank and then an actain booster added. .
I'd like to challenge this theory.... is this a known fact with hard evidence??
Also, are you sure V-Power is 99ron?
__________________
Interested in everything
Offline   Reply With Quote
Old 18 Dec 2009, 07:30 PM   #9 (permalink)
Cool Scooby
 
dan50's Avatar
 
Join Date: Sep 2009
Location: At home licking my windows
Posts: 348
Re: Fuel Quality

Shell website say Vpower is 99ron
__________________
YOU DIRTY DIRTY OLD MAN!!!!!!!!
Offline   Reply With Quote
Old 18 Dec 2009, 08:24 PM   #10 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
Re: Fuel Quality

Quote:
Originally Posted by brumbrum View Post
I'd like to challenge this theory.... is this a known fact with hard evidence??
Also, are you sure V-Power is 99ron?

tbh its what i got told, i do know tesco's seem to have had alot more duff batches than shell so prob not far off.

yep vpower is 99 ron plus some additional adatives
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 18 Dec 2009, 09:31 PM   #11 (permalink)
Dedicated Scooby
 
brumbrum's Avatar
 
Join Date: Oct 2004
Location: Cardiff
Posts: 1,975
Re: Fuel Quality

Quote:
Originally Posted by Tidgy View Post
tbh its what i got told, i do know tesco's seem to have had alot more duff batches than shell so prob not far off.

yep vpower is 99 ron plus some additional adatives
cool,,, nice to know shell is 99 as i use it and its less than a mile from my house - although you do pay a premium over tescos 99 !!

my car is mapped on 97 ron (before i bought it), and i'm starting to see the attraction of this. It takes the stress off finding high octane fuel every time you go further than local territory, and it also takes away the fear of pinking when tracking the car or running it hard (as long as it has 99 ron in it) and not having to use octane booster. It also has the benefit of being able to take the car abroad easily.
__________________
Interested in everything
Offline   Reply With Quote
Old 19 Dec 2009, 12:21 AM   #12 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
Re: Fuel Quality

Quote:
Originally Posted by brumbrum View Post
cool,,, nice to know shell is 99 as i use it and its less than a mile from my house - although you do pay a premium over tescos 99 !!

my car is mapped on 97 ron (before i bought it), and i'm starting to see the attraction of this. It takes the stress off finding high octane fuel every time you go further than local territory, and it also takes away the fear of pinking when tracking the car or running it hard (as long as it has 99 ron in it) and not having to use octane booster. It also has the benefit of being able to take the car abroad easily.

shell seem to be poping up all over at the min, alot of the motorway services seem to be switching to shell.
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 19 Dec 2009, 07:47 AM   #13 (permalink)
Dedicated Scooby
 
nobby248's Avatar
 
Join Date: Aug 2004
Location: Cardiff Wales UK.
Posts: 2,744
Send a message via AIM to nobby248
Re: Fuel Quality

Interesting thread...

Petrol is made from an organic material and does 'go off' with time

It also attracts water molecules and can 'self contaminate'

Petrol is a brilliant solvent and cleans and disolves all sorts of things

Tesco 99 Contains 5% Bio Ethynol (A type of high grade alcohol made from plants, usually sugar beat or the like)

Tesco are supplied fuel directly by Esso (ExxonMobil) Mobil oils, Exxon and Esso all the same production line so to speak...

I only use Tesco or Shell 99/98 and have dual maps... one for 99ron and one for 97 Ron. Sim Tek switchable ecu makes life easier

Hear is a link to Pistonheads and a fuel test... Tesco 99 ron wins

RE: Tescos 99 wins fuel shootout
__________________
Poor but happy!

Last edited by nobby248; 19 Dec 2009 at 07:49 AM.
Offline   Reply With Quote
Old 19 Dec 2009, 10:44 PM   #14 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
Re: Fuel Quality

Quote:
Originally Posted by nobby248 View Post
Interesting thread...

Petrol is made from an organic material and does 'go off' with time

It also attracts water molecules and can 'self contaminate'

Petrol is a brilliant solvent and cleans and disolves all sorts of things

Tesco 99 Contains 5% Bio Ethynol (A type of high grade alcohol made from plants, usually sugar beat or the like)

Tesco are supplied fuel directly by Esso (ExxonMobil) Mobil oils, Exxon and Esso all the same production line so to speak...

I only use Tesco or Shell 99/98 and have dual maps... one for 99ron and one for 97 Ron. Sim Tek switchable ecu makes life easier

Hear is a link to Pistonheads and a fuel test... Tesco 99 ron wins

RE: Tescos 99 wins fuel shootout

i wouldn't pay too much attention to that test matey, optimax is way outdated now
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Welcome Thorpy joins our Forums... The_Team Newbies - Say Hello Here 5 03 Nov 2009 09:12 AM
What to consider/look out for when buying a JDM compared to a UK?? brumbrum General Chat - Anything about Anything 32 28 Mar 2009 09:08 PM
Superunleaded wrx_ryk General Chat - Anything about Anything 0 27 Oct 2008 09:45 PM
16 important OIL questions and answers oilman Technical General 0 23 Jan 2008 03:31 PM
ECU Data Fault Codes 2002pete Electrical (Including ICE) 2 25 Apr 2007 07:59 AM


All times are GMT. The time now is 10:51 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.