mje_wrx

iTrader: (6)

Anyone else had issues with this fuel. Since filling tank im getting det and rough idle.

prodriverules

iTrader: (52)

i've heard afew complaints about this now with tesco fuel but havent heard why yet mate,keeping my ear to the ground though.

95turbowagon

iTrader: (17)

I'm using this fuel so would be keen to know if any problems are arising, not had any of the signs you mention.

scott64

used this a few times without any problems so far

jaytc2003

iTrader: (1)

its the same 99 ron that tesco used previously, just a rebrand. Have you always used it? Could be a bad batch or it could have been in the tanks for a while (most people shopping at tescos will just use regular unleaded)

happydude303

iTrader: (1)

what sort of problems are you getting oh and i only use v power full stop

V4JDMSTi

iTrader: (2)

No problems with it here. Before using done a little search to check if it was the Sam as old 99 and was told that it was a new name but the same product.

Frosticles

iTrader: (1)

been using this since I bought the car 4 weeks ago. No problems at all here. Like has been said, probably a bad batch......

pencul

same here been using the stuff for over 12months never had any problems with it

JonMc

iTrader: (51)

Just used a tank full and no issues as far as I can tell

mje_wrx

iTrader: (6)

always used tescos. i was told they have a new supplier. under hard boost now my check light flashes which on simtek ecu is a knock warning. got some octane booster now to see if it helps. my tank was dry, 20miles into filling tank, first time i gave it beans light came on.

al02uk

iTrader: (1)

As said above, it is most likely a bad batch. Tesco don't have another supplier they buy their S.Unleaded exclusively from Greenergy International, however they have just signed a new contract with a different haulier. The "momentum" bit is just their attempt at a brand name.

Andy

mje_wrx

iTrader: (6)

ahh, il octane boost up and hope for best

BLACK TURBO

im using it and so far no problems.......

seddomyster

iTrader: (9)

how long until fuel goes of in the tank?

buff01

no probs here using it in a wr1 and jdm bugeye all seems well.

davedipster

Been using tesco 99 for over 3 years now, never had any issues with det/poor running.
300hp 03sti BTW.

dipster

al02uk

iTrader: (1)

I wouldn't worry too much about petrol as your fuel tank is likely to be air tight 90% of the time and would/should have no water ingress.

Because most fuels now contain a "bio" element, they are now so called "live" fuels in which bacteria can start to grow if open to any elements for a period of time. Diesel is contains more oil than petrol and has a much shorter lifespan, we tell our customers to use diesel within 3 months.

jamesthecat

there was a post on rs6.com awhile back about tesco's 99 octane cant remember what it was about but they avoid it at all costs

lordharding

iTrader: (1)

Used tesco super for five years now my00 decatted
No problems whatsoever

+Doc+

Never had a problem with it.

wrxmad

hi all
put 25.00 in the tank today,
had a bit of fun along the twisties on the way home...
checked with my laptop and i had abit of knock around 2800 rpm
and it knocked the iam back to 15 instead of 16..
never had any problems before they changed over the brand
seems like im going to have too retard timing there ..

Stevesbluewrx

iTrader: (4)

Got to be honest. I have used the stuff on/off over the last three years. Only noticed before and now how quick I get through the stuff.

However, I have noticed mid range on the latest fill up that when putting the right foot down it holds back a little more than it did on the last tank full of it (But could be temp related?). Also getting a very black exhaust at present and throwing out a lot of deposit on tick over from cold.

Filling up next tank on V-Power and Meth so will monitor.

Steve

ALi-B

iTrader: (1)

No issue here

One thing to note is because it contains an oxygenate (5% ethanol) and I use it an old jag that runs open loop EFi, it does run a tincy wincie bit leaner when put on the emission tester. Not a problem on cars with enough mapped enrichment or wide band OS sensors.

mje_wrx

iTrader: (6)

like i said, never had issue till now. running car on it for 3 years, but somethings isnt right this time. as id imagine you all know your cars as i do mine. and something isnt right, upon checks of everything only thing left is fuel. tomorrow im putting nf octane booster in. then do a dew miles and mix it in and give beans. see what happens, but v power is way forward for now i think tell i get jgm to map it. one bad batch may be enough to kill engine,not worth risk in my own opinion. especially after ££££'s rebuilt.

stanmo

iTrader: (1)

Agreed it's not worth risking engine for the unlikely chance you'll get a bad batch of fuel.
I used to use Tesco 99 on my old MY99 UK car, but the lights on the knocklink lit up after filling up one day - assumed I got a bad tank of fuel.

After that, I just use V-power; downside is too great, with a costly rebuild, even if the chances of a bad batch with detonation are low.

ALi-B

iTrader: (1)

I've had bad batches of V-power, I've also had problems with water contamination from the same station when it dispensed optimax from the same pumps. One of the reasons why I use Tesco; its a much newer station (newer tanks, pumps etc.) and far far busier than the Shell thats just down the road from me.

I mainly blame it down to the fact most high octane fuels regardless of brand have such a low demand that it sits there stagnating under the station forecouts for weeks on end, then when teh tank is refilled it disturbs what condesation and stagnant fuel that accumulates in there making it worse for any poor sod filling up a few hours after the tanker has done a delivery. Whilst 95ron has such a high demand it never stays there long enough to be a problem.

IMO if you are so worried about killing your engine, you should map the car the for the minmum allowable criteria for BS 7800:2006 Which hapens to be a legal minimum of 97RON.

Its quite feasible to have a 98, 99 or 100ron fuel detriorate to levels of a 97ron fuel, as its still conforms to to the relevent British Standard.

hpoolsteve

iTrader: (4)

Hey guys. i am using this fuel also. Would you please check link and advise if this could have anything to do with it.

Thanks

https://www.scoobynet.com/general-te...ine-light.html

V4JDMSTi

iTrader: (2)

Sounds like the maf has been damaged during cleaning to me. If the car was ok on the rest of the tank of fuel I doubt it's going to be that now as it would have already shown up.

V4JDMSTi

iTrader: (2)

The black in the exhaust is likely to be overfuelling. I've also noticed in the hot weather that mine is holding back a little. Will just be the ecu adjusting for the high intake temps. You'll probably find on cold days it goes a little better. The colder the air the better and bigger bang you get from the oxygen in the air as it's denser and vice versa.

What fuel was the car mapped on?