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[omega2018]

Unless you have weather reports for the days which you carried out these scientific tests and can prove the temperature and air pressure were identical, I'll not believe a word of it.

you're not serious are you?

omg i think you are

just do the tests a handful of times you'll find the results are remarkably consistent.

[baggers]

I have always used a higher grade fuel since 2010 ,not bothered about MPG if I was I'd buy a small vehicle, the cars have always performed well & sailed through the emissions part of the MOT, for a few pence I am happy with that.

    

I'm not bothered about the extra pence for the super unleaded because it does run better and I can get a slightly better return on the MPG (more noticeable on motorway), my Omega can take and make the benefits of 98 so why not use it. 

[YZ250]

Unless you have weather reports for the days which you carried out these scientific tests and can prove the temperature and air pressure were identical, I'll not believe a word of it.

you're not serious are you?

omg i think you are

just do the tests a handful of times you'll find the results are remarkably consistent.

I don't normally post if I disagree with something or someone on here, I usually ignore it, but on this occasion I feel in a position to comment. 
I travel to a cottage in Cornwall several times a year, using the exact same route each time, in the exact same car and with the same grade of fuel. Due to speed restrictions (my wife), I travel on cruise most of the way there, so my speed on each journey is quite consistent. I always travel in the early hours so traffic does not affect my constant speed but my fuel consumption varies each time. On the same 290 mile journey my fuel usage varies from just over a quarter of a tank to almost half a tank. The weather does make that much difference. 
How do I calculate anything from this? 

[Viral_Jim]

Piss off.

I speak as I find and have tried V power in the following cars...

'95 N 1.4 Peugeot 106
'51 3.2 Omega manual
'55 1.9 Vectra 150 cdti
'07 1.9 Seat Altea XL tdi
'54 3.2 Omega manual
'00 2.0 Omega manual
'55 1.8 Vectra C saloon
'55 1.8 Vectra C hatch
'58 1.8 Vectra C hatch
'03 3.2 Omega manual
'63 2.0 Insignia 130cdti
'03 2.2 Omega auto
'11 2.2 Merc E class Blue efficiency diesel auto
'61 2.0 Insignia 160 cdti 4x4
'03 3.2 Omega auto

If that isn't a wide enough test pool, then I don't know what is... on every single car, the net result was zero, ie the extra cost was balanced by a slight increase in mpg, resulting in the same pence per mile.

i don't know why you're getting so worked up about this.  anyone can post a long list of cars they have driven but the proper test is quite easy to do especially if you drive to work on a motorway that isn't too busy (as i used to do):

* choose a set distance eg between 2 or three junctions
* make sure your tank is fully either unleaded or super unleaded
* set cruise control
* reset fully your average mpg on the display
* drive the distance at the cruise speed and write down the final mpg figure.

tested half a dozen times i was getting about 10% more mpg with super on the 2.5 V6, that's my experience.

hopefully oof is about people sharing their experiences not about keyboard warriors telling people to piss off

A brief glance through this article ought to demonstrate how overly-simplistic that approach is...http://blog.caranddriver.com/why-your-trip-computer-isnt-giving-accurate-mpg-readings-and-how-to-fix-it/

There are far too many variables to work it out in the real world. Given plastic tanks expand/contract depending on temperature, even brim to brim is far from an accurate method.

Instinctively I think that unless your car has been mapped for higher octane fuel - and hence will knock its ar$e off on 95 Ron it's probably not worth the cost difference. No scientific basis for this though.

In reality I suspect any of the following would have a bigger impact on your mpg:
- unloading all the accumulated crap in the car
- driver losing a couple of pounds
- correctly inflating tyres

[Kevin Wood]

As has been said, not much point in using premium fuels in an Omega but the power of marketing and the placebo effect is significant.

[baggers]

The weather does make a difference to the running.

[omega2018]

results for my 2.6v6 manual,  super unleaded, 60mph on cruise, same 5 miles of motorway, different days (months even)

38.8mpg
39.3mpg
38.5mpg
38.8mpg

try it.

incidentally i've also tested the MID 'range' function on the mig,  twice on the 2.6 and twice on the 2.5.  both cars figures were accurate to a mile. 
not so easy to try, be safe. 

[05omegav6]

Definitely snakeoil...

Done 240 miles today on a brimmed from empty tank of V Power... mostly motorway and mostly with cruise on and managed a whole 23 mpg

[omega2018]

not snake oil,  octane is a fundamental part of petrol chemistry. 

loads on the internet if you look eg

https://d16vpkeamxept2.cloudfront.net/assets/6ca06d648b9541e78fa838fece4a1a23.pdf
http://www.frontseatdriver.co.uk/2014/03/is-shells-super-unleaded-really-super/

[05omegav6]

Shell clearly didn't have anything to do with that piece...

If it helps you sleep, you carry on... I will continue to buy it as long as I get triple airmiles

[Broomies Mate]

not snake oil,  octane is a fundamental part of petrol chemistry. 

loads on the internet if you look eg

https://d16vpkeamxept2.cloudfront.net/assets/6ca06d648b9541e78fa838fece4a1a23.pdf

Good read.  So what's your point?  I don't see anything in the Millbrook report which suggest anything like a 10% increase in fuel economy.  Please, prey tell! 

As for the Shell Nitro vPower+ RocketFuel Titanium CarbonFibre edition report, sponsored by Shell (which doesn't state any firm figures on fuel economy), again.... what's your point? 

YES, IT WILL HELP ENGINES WHICH ARE DESIGNED (OR MAPPED) FOR IT TO WORK WITH.  IN AN OMEGA, IT WILL NOT.  Simples! 

[Auto Addict]

Fit a rubber crankshaft, increased compression as the revs build up = more power = better mpg

www.acmerubbercrankshafts.com

[zirk]

TurboMags are what you need instant 15 to 25% increase to MPG, works on Petrol, Diesel and LPG. Gives High octane performance with lower octane fuel, read the tech spec on the sellers page, proven technology.

I reckon its only a question of time before Car Manufactures catch on to this and start fitting them as standard. 

http://www.ebay.co.uk/itm/2-x-12000gauss-POWER-MAGNETIC-FUEL-SAVER-SAVE-15-25-PETROL-DIESEL-LPG-HG-/281024706171?_trksid=p2141725.m3641.l6368

[Nick W]

If I fitted enough of that sort of miracle device, and primed them with ultra super plus mega petrol(with extra marketing wank)^tm would the fuel tank refill itself the faster I drove?

[Viral_Jim]

Shell clearly didn't have anything to do with that piece...

If it helps you sleep, you carry on... I will continue to buy it as long as I get triple airmiles

Ooo, now that is interesting, which programme are you with? I've managed to amass 190k of Miles and More in the last 3 yrs. hoping to hit 220k by next spring to take swmbo and I to the US business class so always keen to build up the miles!