Anyone used it?! got an ideas?!

only 89.9p a litre at my local one (about 15miles away)......

 

thats cheaper than optimax and super unleaded

 

99ron at tescos, fuck we arent getting that over here in n.ire

 

Any news on Shell bringing their V-Power (100RON) over here yet?

 

Supermarket fuel

Stick to proper sul - esso.

 

Lol fuel convos always bring up loads of comments

 

v power wots that all about never heard of it? so how much ron is optimax???

 

go on then steve...?
what doesn't supermarket fuel do that Esso does?

 

I work at Shell,Stanlow plant and you want to see all the lorries filling up at the same place.

Even BP lorrys fill up at Shell.

There are all types of other companys filling up from Shell.

i do believe that there are different additives added to different ones though.



Dave.

 

What i was thinking too. Also, how will increased ron/mon affect performance on a engine mapped (safely) for 95 ron?

 

Additives - fuel goes off over time

So as they ship that much its probably higher ron when its at the pump but depending on additives used means if ya run ya car once a week it might not be the same...

Shell optimax has this effect too - but doesnt loose RON as fast as some fuels.

Most high ron fuels are 95 plus additives - esso SUL is 97 RON fuel.

 

optimax 98 ron

bp super 97 ron

bog std unleaded 95 ron

IIRC

 

Optimax is 97.4 to 98.4 if i remember rightly....

When it leaves the pumps....bit odd having a variable ron rating on a fuel IMHO

 

V-Power is 100RON and available in Europe.

We NEED that here!!

 

Whats the MON of V-power ?

 

tesco 99ron is very good apparantly, has been tested and certainly makes a difference to mine.

 

So every tesco has high rating super dooper? dont sound right tho does it

 

only selected stores in the south Jano, piloting it down here or summat.

but no, it dont sound right really!!! normally wouldnt go near the supermarket shite but it is apparantly the best fuel otc in uk!

 

Any list's of the stocist of the higher oct from Tesco

 

here in Holland Shell V-power is unleaded 95 ron

 

OK.. I don't get this anti-supermarket fuel thing that some people have got...
What part of BS 7800:2000 specification for super-unleaded fuel doesn't the supermarket fuel comply with?? Cos everywhere I go, that is what it's labelled with and if it doesn't comply, then we've got reasonable grounds to complain

 

Nobody know??

 

nope - if the engine has no issues with 95, then 97 or higher will give no benefit, apart from improving the det. margin. There will only be a performance benefit if that margin is closed up by mapping more aggresively to get some gains from ignition timing and/or boost etc..

 

Im sure ive seen tests in pf etc claiming gains from normal 95ron maps with higher octane's. im also thought Dingy was involved in a test of additives with NF or whatever he used to supply.

 

I have switched to using the 99 ron Tesco petrol, been using it for about the last 3 months, also put in Millers octane booster on every fill up aswell, used to get a bit of pinking before in 5th when giving it stick on optimax, switched to the 99 & millers & no pinking. Thrashed the shit out of it at brands on a trackday & was fine.

Simon.

 

Simon: damaging det may not be heard, if you had a problem on optimax id personally get it checked out.

 

If the engine has borderline pinking/det issues, then there may well be some gains - det restricts power drastically, and by moving out of the det region with higher octane fuel will reduce those losses and improve power under the same conditions.
But if this is the case, then it wasn't mapped safely for 95 fuel in the first place

 

What about modern engine managment, is it able to advance timing to take benifit from high ron/mon rated fuel using knock sensors etc?

 

Same here in Ireland, its only piss water for the price of it.

 

This fuel's been tried out by a few people on the MLR in their evo's & it seems to be ok

Cant wait till they start doing it round here.

 

I've used the Tesco 99RON stuff for a month and to be honest when i went back to using Shell optimax i found it ALOT better IMHO

The 99RON sounds good but i much prefer optimax and i think it's still the daddy

 

simon, i told you should sort that det by turnin down your boost or a remap, (good old rollin road mappin, that det's on the road)
and you need det can's to hear it, if you could hear it by ear then thats seriously detin.

haven't tried tesco stuff,

but sainsbury's super is good, had less det with that than optimax and bp, wen testin them on my hi comp xr2tt.

but i think ding aling might have a point for one , wot fuels last the longest b4 it goes off?

 

LOL @ going off... valid point I suppose, but unless it goes off in a couple of hours it won't get a chance in my cossie!!

 

Fuel debates, absolute nightmare, everyone always has an opinion but rarely any facts to back it up.

Would be interesting if one of the "respected tuners" on here would do a back to back test to see how it compares, set a point like for example 5000rpm@25psi on a given engine and see how much timing each fuel can take at an AFR of 12 flat, or something like that before det, so that we get a conclusive result.

Until then, its all just gossip really IMHO.

Best advice is get your car mapped on a fuel that is always available in your area easily, and then stick to that all the time.

 

most sensible post on the subject I've heard yet chip..

my understanding is that BS.7800 specifies the minimum content (for SUL) and characteristic in respect of RON etc.. so they should deliver the same minimum performance. To come out with "supermarket fuel is shite" is IMO at minimum misinformed..

 

Yes, thats why Optimax is now only stated at 95octane officially, where as they used to try and advertise it at 98RON but it didnt meet the required tests to satisfy that (as dingy says i believe its the difference in base fuels as optimax is tarted up 95, as opposed to based on 97)

 

Interesting stuff..

I have been unable to find any Tesco 99 in my neck of the woods yet.

I think the key issue with these higher octane fuels is the age of it. I've had a dodgy batch of Esso SUL that caused some mega det, yet i've used BP 95 and it didnt have any det, so that must show how badly these fuels can go off!

If Optimax is stated as minimum of 95, its there a minimum RON for normal unleaded aswell?

 

ere james where abouts did you hear about 99 ron and which tesco?

 

I originally posted up about this a few months back after seeing the thread on mlr, people with skylines, evos and supras all tested the stuff, even messing about with more/less ignition, more boost etc and concluded that the tescos stuff was better than optimax iirc....

james, where is the one your talking about then? they dont do it in colchester do they?

 

if they do i want to check it out