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Author Optimax and Super Unleaded
Butler
Member
Registered: 2nd Jun 05
Location: London
User status: Offline
5th Mar 06 at 00:50   View User's Profile U2U Member Reply With Quote
Was planning on filling my car with Optimax today as I was informed it would do me favours, could only find a garage open selling Super Unleaded so I filled up. Just wondering what the differences are in the two, and whether I should notice any difference in using them at all.
iceman
Member
Registered: 22nd Jul 00
Location: Berkshire
User status: Offline
5th Mar 06 at 00:51   View User's Profile U2U Member Reply With Quote
ur only notice a difference if u have a turbo charged car oh a highly modified n/a which is mapped for super
Butler
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Registered: 2nd Jun 05
Location: London
User status: Offline
5th Mar 06 at 00:57   View User's Profile U2U Member Reply With Quote
Aaaah. Cant remember where I read Optimax is good in Rallyes or something lol.
mav
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Registered: 19th Jun 01
Location: Scotland
User status: Offline
5th Mar 06 at 01:11   View User's Profile U2U Member Reply With Quote
I use optimax in mine all the time and the once i didn't use it it ran like a bag of spanners..

is a turbo though so................
Butler
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Registered: 2nd Jun 05
Location: London
User status: Offline
5th Mar 06 at 01:13   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by mav
is a turbo though so................

Yeah yeah we know
Sam
Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline
5th Mar 06 at 01:20   View User's Profile U2U Member Reply With Quote
Got slightly better MPG in the Astra with Optimax, but no difference in performance.
mav
Member
Registered: 19th Jun 01
Location: Scotland
User status: Offline
5th Mar 06 at 02:10   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Butler
quote:
Originally posted by mav
is a turbo though so................

Yeah yeah we know


JayC
Member
Registered: 17th Jan 03
Location: Whitefield, Greater Manchester
User status: Offline
5th Mar 06 at 08:27   View User's Profile U2U Member Reply With Quote
My car runs smoother on optimax and as mentioned better MPG, but thats in a vectra SRi 150.
FlamingCorsa
Member
Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
5th Mar 06 at 08:54   View User's Profile U2U Member Reply With Quote
in my astra turbo i ran it on optmax and was the best, few times i ran it on BP ultimate next best thing and was not as good but ok! optmax was best tho, not sure if u notice difference on smaller power car tho, prob good for engine tho running it on optmax
whitter45
Member
Registered: 15th Nov 02
Location: Norton
User status: Offline
5th Mar 06 at 09:29   View User's Profile U2U Member Reply With Quote
I ran optimax for 6 months and it was so much better then BP

Seemed to run better etc

Now use Tesco 99RON which is even better
deanmcreynolds26
Member
Registered: 15th Sep 03
Location: E46 //M3
User status: Offline
5th Mar 06 at 09:31   View User's Profile U2U Member Reply With Quote
always used optimax with the LET, even on the valver as it seemed to run better! IMHO!
Sam
Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline
5th Mar 06 at 09:39   View User's Profile U2U Member Reply With Quote
I know it doesn't exactly have an engine to write home about (X14XE) but in my Astra I have tried Optimax, BP SUL, and Tesco SUL, and Optimax seemed like the only one that gave noticable difference in MPG. There may have been a slightly performance benefit as well, but that was probably psychological!
whitter45
Member
Registered: 15th Nov 02
Location: Norton
User status: Offline
5th Mar 06 at 09:54   View User's Profile U2U Member Reply With Quote
Only get better performance if your engine has a knock sensor to adjust its timing
Sam
Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline
5th Mar 06 at 09:55   View User's Profile U2U Member Reply With Quote
Mine has a knock sensor. Engine is still shit though!
vibrio
Banned
Registered: 28th Feb 01
Location: POAH
User status: Offline
5th Mar 06 at 10:19   View User's Profile U2U Member Reply With Quote
optmax will clean better than normal if you believe the hype. not I run diesel I don't really care


shell ultra though
Kano
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Registered: 29th Aug 04
Location: Fife
User status: Offline
5th Mar 06 at 10:40   View User's Profile U2U Member Reply With Quote
Butler, I used to use optimax in the rallye, makde mine run a bit smoother.. Supposed to be good for the rallyes because there high revving engines..
GTi runs on it now too...

Oh and it smells ace!
Mark Petty
Member
Registered: 26th Jul 01
Location: Bournemouth Drives: Suzuki gsf600
User status: Offline
5th Mar 06 at 10:52   View User's Profile U2U Member Reply With Quote
my 172 runs on it. Its alot smoother and it is the recommended fuel for the car as it states it on the cap 98 ron
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline
5th Mar 06 at 11:18   View User's Profile U2U Member Reply With Quote
look here:http://www.corsasport.co.uk/board/viewthread.php?tid=258303



[Edited on 05-03-2006 by corsa808]
gsimark
Member
Registered: 14th Dec 05
User status: Offline
5th Mar 06 at 11:22   View User's Profile U2U Member Reply With Quote
my baby runs better on bp ultimate than optimax gets a bit lumpy.
Robbo
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Registered: 6th Aug 02
Location: London
User status: Offline
5th Mar 06 at 12:06   View User's Profile U2U Member Reply With Quote
I must start using Optimax but the only Shell garage I can think of iss 10 miles down the road
Lisa
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Registered: 6th Apr 00
Location: Euxton, Lancashire
User status: Offline
5th Mar 06 at 12:11   View User's Profile U2U Member Reply With Quote
normal unleaded has octane of 95
super unleaded and optimax have 97+
and tesco are now doing one with 99+

my evo should run on as near to 100 octane as possible as thats what they have in Japan so i run it on bp ultimate or optimax with an additive addedd to.

Most english spec engines unless higly modded should run ok on normal uinleaded as this is what they were designed on.........in saying that the corsa runs a lot better on it cos you can turn the boost up more...........hope this helps
Robbo
Member
Registered: 6th Aug 02
Location: London
User status: Offline
5th Mar 06 at 12:19   View User's Profile U2U Member Reply With Quote
Whats the difference between Optimax and regular Super Unleaded?
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline
5th Mar 06 at 12:20   View User's Profile U2U Member Reply With Quote
standard 'normal' car = unleaded
tuned, turbo or performance car = optimax or equivalent

and when i say tune I dont mean an induction kit and backbox

i found my 1.6 on tb's is a lot better on optimax and my 1.4 16v sport if fine on cheapo asda stuff.
cunningham
Member
Registered: 25th May 05
Location: Lochore, Fife
User status: Offline
5th Mar 06 at 12:51   View User's Profile U2U Member Reply With Quote
i only use optimax just abit more cleaner, i felt a performance gain as it i was alot smoother in running
Cybermonkey
Member
Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
5th Mar 06 at 13:13   View User's Profile U2U Member Reply With Quote
i use 101RON Shell Optimax Extreme. its good shit

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