Supermarket fuel?

[NeverAgain]

I really hate it when people say "I've done x and I've had no problems." In what world is a) anecdotal evidence a reasonable standard of evidence? and b) is a sample size of your 3-4 vehicles filling ~ 2000 litres of fuel a year a reasonable sample size?

Do you think someone would someone say "I smoked 20 cigarettes a day for the last 5 years and I didn't develop cancer therefore there's no health risks associated to smoking."

[tom_e]

[NeverAgain]

[ThatDippyTwat]

I find that simple human error is more likely in a supermarket, as said, they have far higher volumes, and far more deliveries, than your average local station. In this area, on past history, they're one's likely to fuck up and put the wrong fuel in the wrong underground tank. They then drag feet, kick and scream over fixing the issue, which in some cars, goes beyond a simple drain and swap.
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'98 VFR800 (touring) - '12 VFR800 Crosrunner (Commuting) - '01 KDX220 (Big Green Antisocial Machine)

[weasley]

A bit more anecdote for you; a new person started work with us recently. Their previous job had been with a major supplier of DPFs and catalytic converters. We were chatting about the whole DPF/diesel thing and I mentioned that I had had a Skoda diesel with a DPF that had had not a moment’s issue over 75,000 miles and I had done nothing special to look after it. They asked me what fuel I used and I said just the big brand stuff, never supermarket. “You did look after it then” was their reply.
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Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[AshWebster]

It depends on the compression ratio of your engines..

Some supermarket fuel has low octane which can cause det in tuned engines with higher compression ratios.

I only ever use v power in both car and bike... i'm not fully clued up on my bikes engine (probably a job for today while qwork is slow), but I do know for a fact (and from experience) low octane fuel breaks my car engine.

So yes, for everyday lumps like bandits I'd say Tesco's own brand shoudl suffice, but for trackday tricksters I'd definitely say V-power (or similar), if not for the safety of your engine but the added horsepower the better fuel gives...
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Honda cg125 J reg peice of shit ---> CB650F ---> 2016 CBR600RR
Ford KA ---> 93' MR2 ---> 94'MR2 ---> 98' Subaru WRX STI Ver 3 (track car)

[Aceslock]

There seems to be a lot of chemists on this thread........

Ethanol causes your engine to rust! Don't fill up with cheap fuel, use the expensive stuff!

And while your at it, go to a motorway service station cause theirs is so expensive it cures the rust in your engine that you caused by using Tescos shit
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Previous Bike: Skyjet SJ27
Sold: Yamaha YZF 600 R Thundercat. Sold: ZX636R
Current bike: R1 14B (Beast)

[Andy_Pagin]

FWIW for the past thirty four years I've stuck religiously with 'whatever's the cheapest'. No issues so far...
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They're coming to take me away, ho-ho, hee-hee, ha-haaa, hey-hey,
the men in white coats are coming to take me away.
Yamaha Vity -> YBR125 -> FZS600 Fazer -> FZ1-S Fazer

[MCN]

[MCN]

https://en.wikipedia.org/wiki/Tetraethyllead
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[oscar777]

I've known enough people in that industry, and all have said the same thing. The standard fuel is from the same supplier to all supermarkets aside from Tesco, who have their own supply. You can even see the BP trucks filling up sainsburys etc stations.

If you're talking premium, the non supermarkets have their own formulas with cleaning and anti ping additives. So yes they will be better. But that is reflected in the price and if also depends on the compression of the engine as to whether you'd benefit from higher octane. Low compression motors run better on lower octanes as it's simply a higher calorie content per ml.

Now Tesco seems to be a different story and I would never fill up with their standard fare. I remember when I ran my 125, it would run like utter sh*t on tesco petrol without fail, I considered that a good confirmation. They've also had past instances of ethanol spiking.

As far as filling wrong tanks go, saying supermarkets are more prone is a bit of paranoia in my opinion.
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Push bike with a 80cc jerry rigged 2 stroke---> CBR125R ---> GSXR600 ---> Ducati 1098SF

[Panda1909]

If supermarket fuels rust up parts of the engine, would using something like Redex or similar work to clean it out every few fills?

[oscar777]

[Panda1909]

[fireyphoenix1...]

Redex is shit never really noticed any gains from it.
Millers EcoMax seems to work well tho, i think its just a bottled mix of the detergents octane boosters ect in fuels like Vpower.

I tried some a few days ago went for a nice long ride.
2 tanks full at 1ml per litre.Bike was noticeably smoother running at 4500 rpm cruising. Probably just helped de crud a sensor or something.
Dunno the science, just know it worked.

In my bike its a difference of pennies per tank so i just run premiums unless its a middle of of nowhere station.
Probably costs me an extra £20 a year at most, no brainier to me.
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2014 Aprillia dorsoduro 750 factory.

[MCN]

I honestly believe the placebo effect does much more for performace and MPG than claims from fuel producers.

But. I still like to use High Juice in my bikes. (Coz they can really convert all the benefits.)
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[chickenstrip]

[skatefreak]

As far as anecdotal, the only additive I've found to do anything for anything would be redex for diesel which only seemed to help with old school CAV fuel pumps. Anywhere else I've not seen it do sh*t.
Same for redex for petrol everything

[buaan]

I always fill up at either Asda or Morrisons, in my KTM, in the TDI or the Petrol Turbo car I have.

The bike has done 10k in my ownership on that fuel, Derv car 50k and Petrol 500 miles lol - No issues on any of them, as in no issues with the engines at all not just related to fuelling.

I only run something like say Shell Optimax or whatever it is when I specifically tuned an engine to run the higher octane fuel with more advanced timing.

The premium fuel will give you a boost in bhp and a slight bump in MPG but where I fix it is bloody 10p a litre more expensive! The modern turbo petrol car I am told puts out around 10hp more on the stock tune, I didn't notice any different in mpg when I tried it as it was its first tank of fuel.
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2007 - KTM 990 Adventure

[Rogerborg]

[MCN]

[P.]

GSXR says 95 RON, it gets any old shit. If it ignites, it goes in.

[Copycat73]

[grr666]

Kin DPFs. Don't get me started. My nearest place is an Esso so that's what it gets. I always fill up whatever I'm
in/on when I go for fuel. Can't see the point of odds and sods here and there. Besides, too many people do their bloody
shopping, scratchcards, lottery, electric and tobacco at the same time. I'd rather visit as infrequently as I possibly can
and not be stood behind them while they balls about buying other stuff that is freely available elsewhere at a variety of
locations, whereas I'm limited to buying fuel at fuel stations. It's always a fkin woman too, wistfully choosing
a nice bunch of flowers to take home oblivious to the fact the queue of cars goes onto the road, then she PICKS UP A
BASKET and goes inside to ponder what bottle of wine to take home that will be nice with dinner.
As if fuel caps, plastic gloves, driving through car wide gaps and parking within a metre of a pump don't slow
women down enough, they give them somewhere to shop as well??? Who thought of that should be shot.
Anybody familiar with the Tesco Petrol station in Warmley will know exactly what I mean.
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Currently enjoying products from Ford, Mazda and Yamaha
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[MCN]