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[freeman123]

hi chaps.

is there any advantage to using high octane fuel in an omega? 

[Nick W]

hi chaps.

is there any advantage to using high octane fuel in an omega? 

No.

[freeman123]

is it not meant to keep the engine cleaner 

[05omegav6]

You can use V Power to good effect...

But...

It costs more, although you get slightly more miles from a tank and the car will feel more responsive...

Net benefit is zero though, as Nick so succinctly put it

[Nick W]

is it not meant to keep the engine cleaner 

How do you suppose that works?

[freeman123]

haven't a clue  just what I heard 

so v power it is then 

[05omegav6]

haven't a clue  just what I heard 

so v power it is then 

V Power will cost you an extra £2-3. You will get an extra £2-3 of mileage from it. Ergo, you might as well stick to regular unleaded

[flyer 0712]

is v.power not a cleaner burning fuel..there fore cleaner moving engine parts 

[Mr.OmegaMan]

Might as well just put in V Power... Every little helps. I use V Power if that particular pump is clear if not i'll just use standard Shell. But I've only used Shell whether that's standard or V Power the past 3 years with the V6, I used to put anything in the 2.2 though I didn't notice any difference in that car... In the V6 i noticed i was getting less miles with other fuel garages. Could well be a placebo effect but i'll be sticking with Shell fuel for the foreseeable future regardless.

[biggriffin]

Basically, gives a bigger bang, therefore helps increase power out put, not really noticeable on an un-tuned road car, the only real gain is the higher burn,and higher temps is it helps burn off residues in the exhaust side, and cats. Best used for a week before mot day,.

[2boxerdogs]

Always use BP ultimate since I bought the mig in 2010 & still use it in the Merc.

[omega2018]

think the compression ratio is 10:1 on the 2.2 so yes you'll benefit from higher octane petrol - knock sensors will allow the ignition to advance, more power, more mpg.  on the 2.5 V6 (also 10:1) i used to get 10% more mpg with super unleaded, tested on several journeys on the same stretch of motorway on cruise control. 

i haven't tested the 2.6 i suspect the gains aren't as much as CR is lower.

[geoffr70]

Higher octane fuel doesn't give a 'bigger bang' or help increase power output. If petrol is identified as higher octane, it means that of the many hydrocarbons of which it is composed, octane is there in higher proportions. As octane is more stable than other hydrocarbons, this results in a more stable fuel that is less likely to knock. Using the so called premium or 'high octane' fuel in an engine designed for high performance and/or turboed engine will allow that engine to function as intended, without knocking, it won't make a bigger bang or make more bhp than stated, nor will it do that in an engine that is capable of running on regular fuel. Ask yourself how many standard road cars really need high octane fuel!

[TheBoy]

The (very mild) benefit in (modern) 91/95RON cars is the ignition will advance more before the knock sensors drag it back.

This will have a (minor) impact on economy and responsiveness.

[tunnie]

When I stick the posh fuel in the GS, I can really feel the difference. Smoother, more power 

Now I've started using bike for work again, I'm going to stick a tank of the good stuff in. As post winter slumber just been getting used to riding it again. As I've also just fitted muffs!

Never really feel a difference in the car, don't really feel it's worth it over a tank of 60L.