Tesco pay at pump for petrol

Kitty777

I have had it take over a week before, to come out of my account...I don't know why, tesco is the only place that does it ><

I wondered what the random £1 pending was the other week in my account..now I know what. thanks

thescouselander

DUTR wrote: »

Because your M3 (along with many other cars) have a high compression engine and no timing retard anti knock sensor, when fuel pre ignites , the power is reduced as the ignition occurs before time of the complete compression stroke and spark. Even if the car does have anti knock and timing adjustments, the maximum power available is not achieved for the fuel used. The difference maybe only a few mpg and reduced torque. For engines that can use lower octane only fuel there is no benefit to using a higher octane.

I've had all kinds of cars with "performance" engines but frankly I've never noticed any difference between the normal unleaded and and the higher octane stuff. If there is a performance gain it's probably only a couple of percent difference in power and IMO barely perceptible under normal conditions. I certainly don't think its worth the extra.

Nodding_Donkey

softmind82 wrote: »

I hope police is not gonna knock the door and saying Mr abc you didn't pay your fuel bill so we welcome you at the police station.

At which point you say here's the receipt, goodbye.

DUTR

thescouselander wrote: »

I've had all kinds of cars with "performance" engines but frankly I've never noticed any difference between the normal unleaded and and the higher octane stuff. If there is a performance gain it's probably only a couple of percent difference in power and IMO barely perceptible under normal conditions. I certainly don't think its worth the extra.

As mentioned it depends what the mfrs suggest, yes the difference is not night and day, for those that are designed to use 98ron, you should notice a difference in everyday driving.

uknick

Running my car on 99 does give better economy, about 4%. But, it costs about 4% extra at today's prices so no real gain financially.

Does it have any more power? I suppose if you have the driving feel of a Vettel or Hamilton one might notice. But for me, I've never noticed any difference.

However, the engine seems to like the higher RON; for some reason it is easier to stall with lower RON.

almillar

Ah the old posh fuel debate. Standard unleaded is 95 RON, 'Super' Unleaded and similar is 98+ RON (97?). In these days of fuel injection and variable valve timing, if your engine can make use of the higher octane fuel, it will. Don't expect it to do so straight away, that would be dangerous, as there would be 95 sloshing around in there too. You need to run a couple of tankfuls of the good stuff through, and even then you might want to consider resetting your ECU to make the engine re-learn the timings. So you need to read your car's manual, and also test for a few weeks, before you judge super unleaded in your car.
Lots of VAG motors politely request 98 but will run happily on 95. My 350Z demands 98 and only wants to use 95 to get to the next petrol station, and should not be driven hard, and definitely not above 5000RPM, where there can be knocking issues.

JustinR1979

softmind82 wrote: »

I hope police is not gonna knock the door and saying Mr abc you didn't pay your fuel bill so we welcome you at the police station.

It won't dispense fuel until your card is accepted, so how the fuck is that going to happen? Maybe he sucked it out the end of the nozzle and spat it into his tank?
Anyway I doubt his surname is abc so they will soon be on their way once they realise they have the wrong person.

JustinR1979

thescouselander wrote: »

I've had all kinds of cars with "performance" engines but frankly I've never noticed any difference between the normal unleaded and and the higher octane stuff. If there is a performance gain it's probably only a couple of percent difference in power and IMO barely perceptible under normal conditions. I certainly don't think its worth the extra.

I have never noticed much difference either.
However, there is a drop in mpg which cancels out the saving per litre, so is well worth using the higher ron

facade

Nodding_Donkey wrote: »

At which point you say here's the receipt, goodbye.

Always keep the receipt for a couple of weeks, then if there is another bad batch of fuel/water in the fuel that wrecks your car you can prove you bought fuel from them

Nodding_Donkey

I'm self employed so I keep them for ever it seems