Tesco 99 Ron Super V 95 Ron Unleaded

[zakelwe]

You can notice air differences during the same day in the summer. I often find on the bike if it's been a cold night and it's a chilly crisp morning the bike will run a lot better on the way to work than it does on the way home, so the differences aren't limited to major shifts in the atmosphere.

I only bought it up because you said about the temp being 'slightly colder on the 99RON test' and that would be a bonus inline with what I was talking about.

And as I said I have run it from Spring to Summer to Autumn to Winter and it was only within 3 tankfuls that I actually noticed a difference on that hill which I have done 5 times per weak or 100+ times or so. But it's not conclusive as I have not switched back. I will start logging it from this week.

Regards

Andy

[zakelwe]

Not the sort of thread i thought would be in the Aygo forum of all places!

Higher RON fuels are worth it if you have a performance engine.

If you don't, then the added cost of the fuel outweighs the minimal benefit.

;)

Actually I think it is the other way around.

Before I ran my Aygo I ran a C43 and noticed nothing more when I filled it up with super unleaded. Perhaps the traction control light might have come on more often when it went from 300bhp to 310bhp but when you are talking about 300+bhp and have an excessive of power over grip do you really need that little bit more?

On the other hand if the Aygo goes from 67bhp to 70bhp, perhaps then maybe it makes more of a difference in the real world considering what the Aygo needs every bhp it can muster?

Food for thought anyway.

Regards

Andy

[adilmon]

...Just because I don't agree with your views that doesn't make me any less intelligent than you. Unless you have proof to the contrary of course.... ;)

In this case a counter example is sufficient. I bet you didn't say the above to your driving instructor. How can you say that the different fuel is a placebo without a dyno graph or at least a paradigm to explain the mechanics of why higher octane fuel is ineffective? By all means, tell us what you think, but draw the line before you stray into BS. I have given several variables which may contribute to better mpg. The burden of proof is on you

[geoffb]

In that case- your intellect is a placebo

I didn't realise my views were so important to you and you obviously feel disheartened that I don't agree with you, so much so you feel the need to insult me.

Just because I don't agree with your views that doesn't make me any less intelligent than you. Unless you have proof to the contrary of course.... ;)

Awwww come on guys - we're just talking about petrol and expressing opinions (to which we are all entitled) ;) We are all on the same side (Toyota owners) really.

Lets all kiss, make up and have a group hug - well, not literally of course not least because I'd have my wife to contend with

Oh and happy 2009!

[Norfolk n Chance]

Not the sort of thread i thought would be in the Aygo forum of all places!

Higher RON fuels are worth it if you have a performance engine.

If you don't, then the added cost of the fuel outweighs the minimal benefit.

;)

Actually I think it is the other way around.

Before I ran my Aygo I ran a C43 and noticed nothing more when I filled it up with super unleaded. Perhaps the traction control light might have come on more often when it went from 300bhp to 310bhp but when you are talking about 300+bhp and have an excessive of power over grip do you really need that little bit more?

On the other hand if the Aygo goes from 67bhp to 70bhp, perhaps then maybe it makes more of a difference in the real world considering what the Aygo needs every bhp it can muster?

Food for thought anyway.

Regards

Andy

Do you have Dyno sheets for these claimed increases in BHP??

[Demonic Angel]

...Just because I don't agree with your views that doesn't make me any less intelligent than you. Unless you have proof to the contrary of course.... ;)

In this case a counter example is sufficient. I bet you didn't say the above to your driving instructor. How can you say that the different fuel is a placebo without a dyno graph or at least a paradigm to explain the mechanics of why higher octane fuel is ineffective? By all means, tell us what you think, but draw the line before you stray into BS. I have given several variables which may contribute to better mpg. The burden of proof is on you

No because my driving instructor taught me how to drive, not about fuel. Otherwise he'd be a fuel instructor.

Is petrolprices.com talking "bs" as well? What about other members who share my opinion? It's not just me who feels this way yet you haven't insulted their "intellect"? Or is it you think I'm an easy target?

I have no burden. I have my opinion. You have yours. Just because mine is different does not give you the right to insult me or my apparent lack of intellect, as you so lovingly called it.

Attempt to insult me or any other member on TOC in future, just because of a difference of opinion, and you'll find your warning bar raised.

[adilmon]

It's a placebo, you think it must be better therefore it is. I've never believed anyone when they've said a small hatch (Aygo, Yaris ec) benefits from 99RON fuel or higher. It's all clever marketing from the fuel companies which you think is true because the engine seems to feel smoother....

In reality unless you can sit in two Aygos at once, one with 95 and one with 99 and drive the same amount of road, it'll never be a conclusive test.

But personally I think its madness.....

Have to disagree IMHO on that one from my personal experience, though can only comment on use with a Corolla. I have been using and checking out Shell V-Power for quite some time now. The engine definitely runs smoother and, on a tank fill comparison with Shell basic unleaded, I am averaging an extra 2-3 mpg better with V-Power. Not enough to warrant the extra cost I agree but I will continue using V-Power until it gets too costly. I plan to keep my car for quite a while and anticipate that the additives will help keep the engine sweeter.

Mind you, I can well understand the suspicion though. Believe me, I too am very suspicious of marketing hype but I can only speak as I find ;)

Here's the proof (for the diesel at least) it isn't a placebo.

http://toyotaownersclub.com/forums/index.php?showtopic=95553