Supermarket fuel

artbaron

Paradigm wrote: »

What does the handbook say?

The sticker on my Saab recommends 98ron but the handbook says it will run safely on 95ron but with some power loss.

Surely your Clio has knock sensors & adaptive ignition timing?

I wouldn't be happy putting in a fuel that doesn't match the ECU mapping and relying on the knock sensor to adjust the ignition, regardless of the obvious performance decrease (which kind of defeats the point of getting a performance car in the first place). Long term it wouldn't do the engine any good and as I mentioned, certain other cars tolerate 95 RON far less. (edited to add the only time I used 95 RON, out of necessity, I got a warning code).

Paradigm

Fair enough, although I find trying to use the power in the winter is practically impossible so I save a few pennies & run 95ron 'till the weather warms.

ETA: All fuel bought from Tesco with no problems.

david39

Nickcc is correct about each marketers' drivers having individual cards that ensure that the correct additives are added to each of their loads.

This does not answer the question I made to gardner1's post as to where is the proof that the supermarkets do not put additives into their fuel or, if they do, that they are of any less quality than those used by the major brands?

Can anyone post a link to an authoratitive statement to that effect - not just the usual urban myth that someone at his local garage says so?

nickcc

david39 wrote: »

Nickcc is correct about each marketers' drivers having individual cards that ensure that the correct additives are added to each of their loads.

This does not answer the question I made to gardner1's post as to where is the proof that the supermarkets do not put additives into their fuel or, if they do, that they are of any less quality than those used by the major brands?

Can anyone post a link to an authoratitive statement to that effect - not just the usual urban myth that someone at his local garage says so?

During my twenty six years employed by Shell and also being involved with the installation and usage of additive systems I can assure you that no supermarket had additive injection systems at any of the locations where I was employed, including the largest distribution terminal in the UK.

cardinalbiggles

waynedance wrote: »

Shell for me as they add additives, no cheapo stuff for me.

They all, without exception add additives.

nickcc

cardinalbiggles wrote: »

They all, without exception add additives.

Without wishing to be inflamative, who is they ? Or is this a general comment lacking in any knowledge.

cardinalbiggles

nickcc wrote: »

Without wishing to be inflamative, who is they ? Or is this a general comment lacking in any knowledge.

All the petrol companies add additives. And no, its not lacking knowledge.

oscarward

My 2p worth

I run a Jag XF 3.0d, it (and previous diesils for about 12 years) runs ok on Asda and Morrisons diesil but doesn't seem happy with Sainsbury. I've only used Tesco once or twice in the last 10 years (geographic reasons) and the car didn't seem too happy with that either. Nothing specific just seems to lose it's sparkle and seems to work harder to make normal progress.

I sometimes fill up with Shell and it seems I get better MPG, sometimes!, when I do but I've never done a proper test. It seems Shell fuel varies sometimes IMHO. It seems ASDA is fairly consistent if not the best

I did try v-max/ ultimate fuels but didn't notice any difference so didn't bother again.

So I buy fuel where I can and as I live close to an ASDA and Morrison's filling station with an ASDA credit card then it is usually ASDA.

Gilbert2

Dave_C wrote: »

Fuel snobbery?

All of my cars have been run on supermarket fuel without any ill effects.

Dave

I'd agree. It seems some people have this bizzare attitude regarding fuel yet often drive just a bucket anyway.

Modern engines don't need additives added to fuel in the UK other than what is the standard, even supermarket fuel must be compliant.

steve-L

Dave_C wrote: »

In reply to my




What part of "without any ill effects" didn't you understand?
I have intention at all of trying any expensive fuel when I know it won't make any difference.

Dave

sorry, didn't realise your hobby was stripping down engines and fuel pumps... obviously you do this on a regular basis. What I'm asking is if you only ever use supermarket fuel what are you comparing with or do you have NO WAX buildup at all when you change the fuel filter? Have you actually sent away the residue for analysis and had lab reports back that there are no heavy aliphatics or aromatics on the filter at all? Or is it possible that when you strip down the filters you might possibly find less build up on a 'premium fuel' that you did on supermarket fuel?