lacky75
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Registered: 8th Dec 02
Location: Norwich
User status: Offline
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been hearing people have been using this in all corsa engines 1.2/1.4/1.6..
is it ok using this stuff (higher octane rating) will it shorten the life of the engine? 
will there be much performanc differance,, hope u can help guys as the cars almost empty anyway.
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CORSA NUT
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Registered: 3rd Aug 01
Location: Wirral
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Works well in my Astra mate.Took a few tanks to show it though 
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MarkM
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Registered: 11th Apr 01
Location: Liverpool
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I have used ot on my ZS loads of times and it doesnt make a difference to peformance...after a couple of tank fulls though I reckon it helped with fuel consumption...only a slight difference though.
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lacky75
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Registered: 8th Dec 02
Location: Norwich
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optimax is a higher octane rating right? 98 compared to 95 for unleaded? will the car have trouble burning it or will it adjust the fueling?
btw, its a 1.2sxi(75bhp)
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MarkM
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Registered: 11th Apr 01
Location: Liverpool
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it will be fine im sure otherwise it wouldnt have been realised dont u think...I dont bother anymore...havnt noticed any difference really...so up to yourself.
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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as long as your car isnt an old 1.2/1.4 8v, the engine will be fine running on Optimax to its full ability. The 1.2/1.4 engines have RON plugs which have settings for 91/95 RON petrol, or if you are lucky, you may find that on the reverse is 98RON settings.
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
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Makes no difference just makes £CASH£ consumption increase! It does however have a feel good factor when burning such 'quality' (  ) fuel.
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supacorsa
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Registered: 11th Feb 03
User status: Offline
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if you want to use it use it but it will only make a difference when youve got a higly tuned engine thats pinking
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Gambit
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Registered: 5th Jun 00
Location: Common Sense HQ
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i presume you all must drive 1.2 8vs then if you cant feel any difference
i use to use it in the corsa when i was back in belfast & you could feel the difference.
if you dont have a knock sensor then make sure you turn the plug over otherwise you are wasting your money
anyhow, i can feel a lot of difference in my golf by using just super unleaded over unleaded, havent tried optimax as they dont do it over here.
might also be something to do with the fact that VW engines are meant to run on 98RON, so 97 is as close as i can get at the mo! & using 95 just retards the engine
[Edited on 15-04-2003 by Gambit]
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lacky75
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Registered: 8th Dec 02
Location: Norwich
User status: Offline
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its a 1.2 16v new sxi. i guess the ECU will adjust itself without me having to change anything.
I have bee using optimax in my other car and must say it has made a differance (smoother idleing, lessned flat spots...etc) so i thought id see if its safe to use in the corsa (as long as i aint gotta change plugs or anything).
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Gambit
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Registered: 5th Jun 00
Location: Common Sense HQ
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it is safe
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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quote:
Originally posted by TOMAS
Makes no difference just makes £CASH£ consumption increase! It does however have a feel good factor when burning such 'quality' ( ) fuel.
Actually i get better drive-ability, its smoother through the rev range, and i get around 30-40 miles more out of a tank of Optimax than super-unleaded from Total. So it works out cheaper for me buying Optimax.
Dave
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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oh yeah, its not safe for all corsa engines. Diesels dont like petroleum much.
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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quote:
Originally posted by sport16v
I have used ot on my ZS loads of times and it doesnt make a difference to peformance...after a couple of tank fulls though I reckon it helped with fuel consumption...only a slight difference though.
unfortunatly quite the opposite, having a higher octane level means you burn more, not helping fuel consumption. but you get more miles out of it, so it kinda balances out.
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lacky75
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Registered: 8th Dec 02
Location: Norwich
User status: Offline
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quote:
Originally posted by Adam Kindness
in my car....
Optimax is more expensive
Optimax has a higher RON rating
Optimax provides MORE MPG!!!!
noticed the same in my other car (200 s14) the power delivery seems smoother and throttle response seems slightly improved, ill try it in the little corsa and see how she likes it. 
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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i work part time at a garage. Shell optimax has a higher octane level, which means it burns more easier = you use more of it quicker, and its better for the engine, hence the price, the other advantage is you get a few mpg for your car, so it balances out.
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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its usually around 10p a litre more, but u get a few more miles from it, so it works out. you see
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
User status: Offline
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aye, i know
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Mikorsa16v
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Registered: 2nd Sep 02
Location: Burgess Hill, West Sussex
User status: Offline
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quote:
Originally posted by lacky75
its a 1.2 16v new sxi. i guess the ECU will adjust itself without me having to change anything.
You have a knock sensor mate, which means your motors brain will detect the petrol has a higher RON rating and adjust the timing for this.
Cars without knock sensors (i.e. 8v ers) have a plug which u more or less manually adjust the timing by turning the plug over.
im gonna fill up with it for my next tank (mine is a 1.2 16v BTW) i think i have heard before that you should use it for one tank and go back to prem just to flush the carbon out or some shit from the premium unleaded.
and Gambit, i thought that super unleaded was just Optimax, thats what a bloke in shell said "its basically just super" this is what i have thought as i never see super unleaded in shell anymore jus premium and optimax
what RON is super compared to optimax?
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
User status: Offline
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quote:
Originally posted by Adam Kindness
it uses LESS of it so you get more MPG !!!!
it burns more efficiently, thus giving more MPG
nope
It certainly doesn't burn more efficiently, it infact burns quicker because it has a higher octance level.
If you had 3 dishes of fuel, 1 diesel (lowest octane level), 1 Unleaded (middle octance level) and 1 of optimax (highest octance level), and lit them, which 1 do you think would burn the quickest?
i'll give you a clue, certainly not diesel 
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Mikorsa16v
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Registered: 2nd Sep 02
Location: Burgess Hill, West Sussex
User status: Offline
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the one with water in
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Bart
Member
Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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no, its the one that has a higher octance level (because it gives off alot more vapour). but true, you do get more mpg
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
User status: Offline
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quote:
Originally posted by Adam Kindness
it burns more efficiently, thus giving more MPG
i thought efficiently would be less?
Diesels are very efficient with fuel because they burn less fuel.
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vibrio
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Registered: 28th Feb 01
Location: POAH
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optiplop has an octane rating of no less than 98.
if something burns more efficently then you do not need the same amount to get the energy release therefore you require less of it. diesel does not burn well.
diesel cars use less because they don;t rev so much and the fact that the combustion is different. petrol is ignited diesel is compressed to the point of exploding
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Corsa^Dan
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Registered: 4th Dec 02
Location: Sleaford, Lincolnshire
User status: Offline
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errrm.. my 8v has a nock sen btw 
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