big eck
Member
Registered: 20th Apr 03
Location: Tullibody. Drives - Audi B8 S4 & Fiesta Zetec-S
User status: Offline
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quote:
Originally posted by Joff
quote:
Originally posted by fadscorsa
well i value the opinion of a lot of ppl on MIG....
plus using higher octane fuel means you have to replace your fuel filter more regularly too
Replacing the fuel filter can only be a good thing - not enough people change this at service intervals.
This is funny how 
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Fad
Member
Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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well ok not all of them but there are some ppl worth listening too 
remind me Joff why is your XE not in your car or fitted yet?
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
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Joff, did you sellotape your ECU to your inner wing?
If you do you are more of a bodge artist than me
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Fad
Member
Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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quote:
Originally posted by Ojc
Joff, did you sellotape your ECU to your inner wing?
If you do you are more of a bodge artist than me
hows the new design sock filters comming along?
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Cybermonkey
Member
Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
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quote:
Originally posted by Ojc
Cyberspunkey, I want your children and we can bring them up living in the water tower.
Yes, sounds like a fishy plan. Remember the old lady who lives in the water tower. She can be The Nanny similar to Hulk Hogan
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Rhino
Member
Registered: 18th Oct 03
Location: Falkirk
User status: Offline
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quote:
Originally posted by big eck
quote:
Originally posted by fadscorsa
read some aticle last year about how its not advisable for older engines due to the cleaning agents in the petrol cleaning the protective coke from the engine, some bloke was suing SHell as hisAstra GTE detonated due to this. (through mechanical reports)
This is why i dont use it....i put Esso super unleaded in all the time, got slightly better mpg and less pinking, but looking at opinions on MIGweb XE's were designed to run on normal unleaded altho it does feel noticbly cleaner on super unleaded.
Dont belive the hype on optimax or BP ultimate tbh prolly good for turbo cars and imports though.
This is exactly what i'm afraid of, I knew I read this article somewhere before BUT is there any truth to it????
I ran Optimax in my 1.6 before i got the rebuilt, it was i bit smoky at the time.
I broke a valve and broke my piston!! (kept them as Souvenirs 
Prob unrelated but i did hear that optimax is for new engines and not older engines.
I run BP Ultimate all the time now, i notice a difference when i go back to normal unleaded.
[Edited on 17-09-2004 by Rhino]
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Andy
Member
Registered: 28th Dec 99
Location: Cumbria, UK
User status: Offline
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quote:
Originally posted by nik
always use optimax but only for the higher octane rating. Havent noticed any better mpg (its shit whatever) but gives me peace of mind. Don't bother with ultimate as everyone prefers optimax.
Disagree with you on this one Nik. It's well know that Optimax uses a number of additives to gain it's high octane rating on top of the base fuel. There have been lots of concerns that these additives are not very stable - fresh out of the refinery Optimax does exceed 98.6 RON but there are reports that it after a while, it degrades rapidly and that its octane plummets to little more than normal unleaded. BP Ultimate on the other hand gains its higher (though not as high as Optimax) octane rating from the base fuel, which is stable. The additives it contains are there mainly for cleaning. There are a number of reports circulating of high performance engine damaged cars around, where it seems the Optimax may not have been fresh. Shell have been repeatedly asked how long they guarnatee the RON rating of Optimax once it's left the refinery but they won't answer this question.
Because there are no 'high tunrnover' Optimax filling stations nearby, I now use BP Ultimate rather than Optimax. It's a point lower RON, but it's guaranteed to hold its RON value. Peace of mind I suppose
[Edited on 17-09-2004 by Andy]
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by fadscorsa
well ok not all of them but there are some ppl worth listening too
remind me Joff why is your XE not in your car or fitted yet?
Because the Corsa isn't ready for the engine
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by Ojc
Joff, did you sellotape your ECU to your inner wing?
If you do you are more of a bodge artist than me
No, the ECU is in the original position..
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by fadscorsa
quote:
Originally posted by Ojc
Joff, did you sellotape your ECU to your inner wing?
If you do you are more of a bodge artist than me
hows the new design sock filters comming along?
Apparently he gets more bhp with Top Man socks than he does with M&S.
Must be the wool to cotton mix ratio.
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Nath
Member
Registered: 3rd Apr 02
Location: MK
User status: Offline
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Might try some of the BP stuff soon. I've used Opitmax a few times and generally it felt better. Also my dad used Optimax in his car and he noticed an improvement and he drives around 350-400 miles a week.
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by big eck
quote:
Originally posted by Joff
quote:
Originally posted by fadscorsa
well i value the opinion of a lot of ppl on MIG....
This is funny how
I've made it simpler. Now do you see the joke?
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GIBBS
Member
Registered: 22nd Feb 01
Location: Kent, Jap Car Importer :)
User status: Offline
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Optimax on my car's, bp ultimate makes the engine run really shit believe it or not, steer clear!
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sassyminx
Member
Registered: 10th Jan 04
Location: Hartlepool Drives: Cossie
User status: Offline
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i only tend to use optimax tbh the car seems to run a lot better with it
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by Andy
quote:
Originally posted by nik
always use optimax but only for the higher octane rating. Havent noticed any better mpg (its shit whatever) but gives me peace of mind. Don't bother with ultimate as everyone prefers optimax.
Disagree with you on this one Nik. It's well know that Optimax uses a number of additives to gain it's high octane rating on top of the base fuel. There have been lots of concerns that these additives are not very stable - fresh out of the refinery Optimax does exceed 98.6 RON but there are reports that it after a while, it degrades rapidly and that its octane plummets to little more than normal unleaded. BP Ultimate on the other hand gains its higher (though not as high as Optimax) octane rating from the base fuel, which is stable. The additives it contains are there mainly for cleaning. There are a number of reports circulating of high performance engine damaged cars around, where it seems the Optimax may not have been fresh. Shell have been repeatedly asked how long they guarnatee the RON rating of Optimax once it's left the refinery but they won't answer this question.
Because there are no 'high tunrnover' Optimax filling stations nearby, I now use BP Ultimate rather than Optimax. It's a point lower RON, but it's guaranteed to hold its RON value. Peace of mind I suppose
[Edited on 17-09-2004 by Andy]
Good point on the Optimax. I was aware of the limited "shelf life" of the fuel but hadn't considered that it could be sitting under the pumps for a while!
Ultimate's normally a few pence more, but there are more of those around.
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goldfish
Banned
Registered: 7th Feb 03
Location: we have a grass in CS he is a chav
User status: Offline
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quote:
Originally posted by Andy
quote:
Originally posted by nik
always use optimax but only for the higher octane rating. Havent noticed any better mpg (its shit whatever) but gives me peace of mind. Don't bother with ultimate as everyone prefers optimax.
Disagree with you on this one Nik. It's well know that Optimax uses a number of additives to gain it's high octane rating on top of the base fuel. There have been lots of concerns that these additives are not very stable - fresh out of the refinery Optimax does exceed 98.6 RON but there are reports that it after a while, it degrades rapidly and that its octane plummets to little more than normal unleaded. BP Ultimate on the other hand gains its higher (though not as high as Optimax) octane rating from the base fuel, which is stable. The additives it contains are there mainly for cleaning. There are a number of reports circulating of high performance engine damaged cars around, where it seems the Optimax may not have been fresh. Shell have been repeatedly asked how long they guarnatee the RON rating of Optimax once it's left the refinery but they won't answer this question.
Because there are no 'high tunrnover' Optimax filling stations nearby, I now use BP Ultimate rather than Optimax. It's a point lower RON, but it's guaranteed to hold its RON value. Peace of mind I suppose
[Edited on 17-09-2004 by Andy]
Mon is more important. both optiplop and bp have the same mon rating it's only the ron in optiplop which is higher
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goldfish
Banned
Registered: 7th Feb 03
Location: we have a grass in CS he is a chav
User status: Offline
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quote:
Originally posted by Joff
quote:
Originally posted by big eck
quote:
Originally posted by Joff
quote:
Originally posted by fadscorsa
well i value the opinion of a lot of ppl on MIG....
This is funny how
I've made it simpler. Now do you see the joke?
he's an inbreed east coaster. don;t expect him to comprehend anything other than food
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vader
Member
Registered: 12th Sep 04
User status: Offline
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Half the people on this site using Optimax are wasting their money in doing so.
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Jason Iles
Member
Registered: 19th Jun 01
Location: Bristol
User status: Offline
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I have to use 98 RON or over in the S2000, it does make a differance as lower RON fuels seem to make the car judder and splutter.
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goldfish
Banned
Registered: 7th Feb 03
Location: we have a grass in CS he is a chav
User status: Offline
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quote:
Originally posted by J 11ESY
I have to use 98 RON or over in the S2000, it does make a differance as lower RON fuels seem to make the car judder and splutter.
yes - this is due to the hairdresser mapping int he S2K 
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Nath
Member
Registered: 3rd Apr 02
Location: MK
User status: Offline
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quote:
Originally posted by vader
Half the people on this site using Optimax are wasting their money in doing so.
Shut up fool.
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goldfish
Banned
Registered: 7th Feb 03
Location: we have a grass in CS he is a chav
User status: Offline
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quote:
Originally posted by Nath
quote:
Originally posted by vader
Half the people on this site using Optimax are wasting their money in doing so.
Shut up fool.
he does have a point IMHO
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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quote:
Originally posted by Nath
quote:
Originally posted by vader
Half the people on this site using Optimax are wasting their money in doing so.
Shut up fool.
I bet you put it in your car dont you FOOL.
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ed
Member
Registered: 10th Sep 03
User status: Offline
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Surely your engine wouldn't be able to make use of the extra octane as the octane plug on the ECU only switches the mapping from RON 93 and RON 95 fuel. I always thought that this stuff was a bit of a con really because not many engines can make use of it... I might be wrong though...
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goldfish
Banned
Registered: 7th Feb 03
Location: we have a grass in CS he is a chav
User status: Offline
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quote:
Originally posted by 1800ed
Surely your engine wouldn't be able to make use of the extra octane as the octane plug on the ECU only switches the mapping from RON 93 and RON 95 fuel. I always thought that this stuff was a bit of a con really because not many engines can make use of it... I might be wrong though...
depends if they have an adaptive ECU and knock sensor
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