Golf GTi 95 or 98 ron fuel??

[Mr Noble]

Hi,

Picked up a gti dsg 55 reg last night and went to fill it up. Got half way through filling with shell 95 ron "normal" fuel, when I noticed a sticker on the inside of the fuel filler door saying "98ron (95)"

Surely they don't make cars as standard that ONLY run on 98 ron SUL??

What do you think?

Greg




ps. Also, The DSG box, pretty impressed so far, but the changes are not a fast as I'd hoped. Not like a M3 CSL or Ferrari F1 box on my mates F430. Are there any software/ firmware updates for the earlier ones (2005 model) to speed up the gear changes slightly?

[cuprabob]

Because it's a FSI engine it is designed to run on 98 RON, better performance and economy. It can use standard 95 RON but the recommendation is 98.

With regards to DSG I have this on my R32 and love it. I do find it seamless and the gearchanges are pretty quick but I've ever tried any of the ther gearboxes you refer to.

It's not perfect, you can catch it out especially about town when your slowing down and then suddenly want to accelerate. It can feel like an eternity to sort itself out> i guess it also feels longet because you are not doing anything else like move a gearstick or push down the clutch giving you full concentration on the gearshift time.

For me couldn't live without DSG now

[Dr G]

Why would you buy a performance car if you want to run it on cheap petrol? :s

[Mr Noble]

Thanks for the advice and DSG help. I'm sure I'm just expecting too much after driving an M3 CSL in "super aggressive gearchange mode"

I'm happy to put 98 in it but was just suprised that it was recommended as the norm! Plus, I'll be doing 20k miles a year for work in the gti and the extra cash soon mounts up. I paid 120.9 pence per litre last week to fill the Noble up with her favorite juice! (optimax)

Edited by Mr Noble on Tuesday 8th April 18:47

[agent006]

Dr G said:

Why would you buy a performance car if you want to run it on cheap petrol? :s

Because most don't need it?

[cuprabob]

Mr Noble said:

Thanks for the advice and DSG help. I'm sure I'm just expecting too much after driving an M3 CSL in "super aggressive gearchange mode"

I'm happy to put 98 in it but was just suprised that it was recommended as the norm! Plus, I'll be doing 20k miles a year for work in the gti and the extra cash soon mounts up. I paid 120.9 pence per litre last week to fill the Noble up with her favorite juice! (optimax)

Edited by Mr Noble on Tuesday 8th April 18:47

Over the next year I'll be doing around 30K miles in my R32 so I know how you feel.

[brisel]

The engine will run very happily on 95 RON fuel, but you won't get the same level of performance out of it.

95 does work out cheaper in the long run if it is a daily driver & you aren't always wringing it's neck!

My R32 will run on 91 RON if needs be but I prefer to use the good stuff i.e. V-Power or Tesco 99 (both 99 RON) because mine is a weekend hooning car & I'm spanking it most of the time!

[Targarama]

Our Golf GTi returns 32-33mpg on 95 unleaded, whereas it does 35-36mpg on super unleaded. Add in the performance benefit and the fact that the engine is happier on super and its worth it when the price is less than 10% more.

[hman]

exactly the same on my audi, optimax gives you more than a 10% mpg increase for less than a 10% price increase.

[Fourmotion]

My car is the same. Runs smoother on V-Power, and I get more miles from the tank. The car's BHP and Torque is also quoted on 98ron, stating in the manual that you should expect a drop in performance when using 95ron.

[phumy]

Fourmotion said:

My car is the same. Runs smoother on V-Power, and I get more miles from the tank. The car's BHP and Torque is also quoted on 98ron, stating in the manual that you should expect a drop in performance when using 95ron.

Because the knock sensor will send a signal to the ECU, in turn the ECU will adjust the timing accordingly, probably slightly retard if using a lower RON fuel, hence the very insignificant power loss.

[flattotheboards]

Dr G said:

Why would you buy a performance car if you want to run it on cheap petrol? :s

I didnt realise there was such a thing as cheap petrol.

[Dr G]

flattotheboards said:

Dr G said:

Why would you buy a performance car if you want to run it on cheap petrol? :s

I didnt realise there was such a thing as cheap petrol.

Touche