UK-POLOS.NET - THE VW Polo Forum

im a v-power abuser its £1.09 in london lucky i get decent wage to fuel my habbit. Its catch 22 using the stuff coz the car gets used to it running on it when you give it regular unleaded it spits and spluts.

£1.09 a litre

It only works out a pound or two more for a tank which ain't a lot

It's 106.9 down here in Bedford, was 107.9 the other week (that's for BP Ultimate)

I had to use Tesco's 99RON the other week though as I was in Kent didn't know how far the nearest BP was so it had to be done.

V power all day long. If i get caught short ( the shell petrol station is other side of town ) a regretable £5 of, unfortunitly, supermarket sh1te.

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garnier Posted: Mon Jul 02, 2007 7:36 pm Post subject:

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I think its about £1 a litre. People say optimax stuff gives better fuel economy, but when its costing an extra 10%, it's a false economy.

The polo is designed to run on 95 ron[quote]

If you look at the back of the petrol cap it states 98/95 RON, so give the Olop what it deserves & spend that little on the 98 RON.

You know it makes sence

garnier wrote: The polo is designed to run on 95 ron, I can't see the benefit in using a higher rated fuel. Even if it does contain detergents, I'm, sure my fuel system/engine would have problems if it needed cleaning

The Polo GTI is designed/tunned to run on 98 ron fuel, when using 95ron is uses a knock sensor to retard the timing to prevent engine damage which reduces power and the mpg a little.

Cheers Dave for sorting the quote function out, forgot how to do it.

98 RON makes the world go round

What 95/98 means is that 95 is the minimum recommended but 98 also is fine. A higher octane rating isn't going to have any difference on a 125 bhp, naturally aspirated car.

You're paying 10% more for a fuel that's biggest difference is pyschological.

The bulls*t about cleaner engines, higher MPG, even though you have to pay more for the fuel, just doesn't wash with me. The 'performance' branding that people pay more for is just a gimmick.

Some crazy jap turbos require 98 RON or they suffer a performance hit. But not a 1.6 air fed polo

Read about octane ratings, and don't be a victim of advertising

garnier wrote:Read about octane ratings, and don't be a victim of advertising

I have done.

The GTi has a relatively high compression ratio for a 1.6 naturally aspirated engine. High compression ration engines run best with higher octane fuels, such as 98RON and above.

As Dave notes above, the knock sensor allows the GTi engine to run on lower octane fuel without damage due to it retarding the ignition.

I remain unconvinced. Its been a while since I used it but I;ll give it a try the next time I fill up

It even says in the manual that using a lower ron fuel for the 1.6 i.e. 95 may affect performance

ok, maybe I'm wrong. I will try the super unleaded and report back.

Will be a few days though as my tank is full of standard unleaded and she's going in for a gearbox repair later in the week....

if i use normal petrol i will get about 300 miles to a tank but if i use proper petrol i can get 350+ on a long journey

I tended to use BP Ultimate until they closed the local station for repairs that was 112.9 usually. Now I'm on the Esso Supreme which is 103.9, but doesn't feel as good to drive on.