Why spend more on V Max when Tesco is just as good?
01 September 2006, 04:11 PM
#1
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Why spend more on V Max when Tesco is just as good?
01 September 2006, 04:29 PM
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Quote: "This apparent gain in power is due to the ECU of the car’s ability to advance the ignition timing to take advantage of the extra power the higher octane offers."
Is this the case once you've had you car chipped for example and EcuTek remap, will that advance the ignition if I put 99 ron fuel rather than 97 or even 95 ron fuels?
(I always have used Optimax so don't know)
Is this the case once you've had you car chipped for example and EcuTek remap, will that advance the ignition if I put 99 ron fuel rather than 97 or even 95 ron fuels?
(I always have used Optimax so don't know)
01 September 2006, 05:59 PM
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Originally Posted by Thorney Motorsport
.....(TMS) has spent seven months of intensive testing to investigate the effect of fuel quality on an engine's power output. It's scientifically proven what the car tuners already believed: the quality of fuel you use in your car has a direct effect on the level of power your car provides.....
No **** Sherlock !
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01 September 2006, 08:05 PM
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Originally Posted by Bil
i dunno m8. our local tesco switched the stickers on the pump, i ended up with diesel in my subaru
i dont trust the big retailers - ill stick with Shell thanks
i dont trust the big retailers - ill stick with Shell thanks
01 September 2006, 08:07 PM
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yeah they screwed me and a few other people
Our cars wouldnt drive off the Tesco forecourt, and then they worked out they had flumpffed the stickers up, Got some dude in a black Merc with wrong fuel too
Our cars wouldnt drive off the Tesco forecourt, and then they worked out they had flumpffed the stickers up, Got some dude in a black Merc with wrong fuel too
01 September 2006, 08:15 PM
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Thorneys a ******, wouldnt trust that gunt
But I am well happy with Tesco super, coming from optimax it seems to do the trick just as well if not a little better, although I am yet to see what I get to this tank and I normally get 250 miles with Shell
But I am well happy with Tesco super, coming from optimax it seems to do the trick just as well if not a little better, although I am yet to see what I get to this tank and I normally get 250 miles with Shell
01 September 2006, 08:31 PM
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Originally Posted by Andy S.
thay only compared it with optimax though
try Vpower alot better than optimax its even improved my mpg
and our tescos only sells 95RON!!
try Vpower alot better than optimax its even improved my mpg
and our tescos only sells 95RON!!
http://fifthgear.five.tv/jsp/5gmain....143&pageid=272
I use optimax/v-power because I like to think that shell know a bit more about fuel that my highstreet supermarket
01 September 2006, 08:53 PM
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Originally Posted by prodrive SL
I rang them and they said they didn't sell it. 
Next time I need some 99 ron I will nip in. Thanks. I can see the station from my back garden too! 
Next time I need some 99 ron I will nip in. Thanks. I can see the station from my back garden too! With my small turbo and low boost Im thinking about using Sainsbury's (BP sourced) SUL because its much cheaper. Our local Sainsbury doesnt stock SUL though, the closest outlet is Meadowhall.
Simon
01 September 2006, 08:55 PM
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Originally Posted by Bil
i dunno m8. our local tesco switched the stickers on the pump, i ended up with diesel in my subaru
i dont trust the big retailers - ill stick with Shell thanks
i dont trust the big retailers - ill stick with Shell thanks
01 September 2006, 08:55 PM
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Originally Posted by p1prodrive
all comes from a very similar oil refinery (if not the same) and they just add there additives to make it optimax or bp ultimate etc..
01 September 2006, 09:07 PM
#20
For some reason,as i have said before, i get better mpg with optimax/v power than tesco 99 ron,even when tescos was a few pence cheaper,go figure ?!?!
if tescos was,say 75p litre and v power was still at 99.9 then i would use tescos,but since they are pretty identical here in price,shell it is for me.
if tescos was,say 75p litre and v power was still at 99.9 then i would use tescos,but since they are pretty identical here in price,shell it is for me.
01 September 2006, 10:43 PM
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I paid 93.9p/litre in Cardiff today for Tesco99 instead of 105.9p/litre for V-Power down the road (only Shell garage in Cardiff). Saved £4.80 on 40 litres, which is worth it in my book.
01 September 2006, 11:24 PM
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Only if we find you
Personally I felt the Optimax was better than Tesco 99 and Vpower is miles better. My car feels transformed.
Strangely it seems to work better than SUL plus NF.
Rannoch
Personally I felt the Optimax was better than Tesco 99 and Vpower is miles better. My car feels transformed.
Strangely it seems to work better than SUL plus NF.
Rannoch
02 September 2006, 08:22 AM
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shell will win, as it knows that tesco have not got off there **** to make the 99 stuff more available
there is no tesco 99 ron anywhere near newcastle AFAIK
scotloand is probably the same?
there is no tesco 99 ron anywhere near newcastle AFAIK
scotloand is probably the same?
02 September 2006, 08:36 AM
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My understang is this :-
The calorific values [MON] is always better on the branded fuels. Shell / BP etc have higher oxygen content than supermarket fuel, hence why they actually perform better in the combustion chamber. The branded fuels burn better / cleaner and this results in better efficiency, the net effect of better efficiency is better economy as you are using smaller throttle openings for a similar BHP output when compared with a less efficient burning fuel.
I think that margins aside the supermarket fuels are blended to the minimum standards allowed to meet the RON ratings whilst the branded fuels retain their own "secret ingredients" for their own USP.
The RON rating is not nearly as important than the MON rating when looking at the quality of fuel.
I am not a fuel engineer so please avoid attacking me if you are. If you know more / better then please enlighten us all
Cheers
Allan
The calorific values [MON] is always better on the branded fuels. Shell / BP etc have higher oxygen content than supermarket fuel, hence why they actually perform better in the combustion chamber. The branded fuels burn better / cleaner and this results in better efficiency, the net effect of better efficiency is better economy as you are using smaller throttle openings for a similar BHP output when compared with a less efficient burning fuel.
I think that margins aside the supermarket fuels are blended to the minimum standards allowed to meet the RON ratings whilst the branded fuels retain their own "secret ingredients" for their own USP.
The RON rating is not nearly as important than the MON rating when looking at the quality of fuel.
I am not a fuel engineer so please avoid attacking me if you are. If you know more / better then please enlighten us all
Cheers
Allan