99 Ron

[scottm72]

sounds good, i aint doing the math but will go with your saying,,,, upgrade fuel from now on, 

[Peppermuncher]

Don't know if its a placebo effect, but went for my first drive since filling up with Tesco 99 Ron. After  a few miles of letting fuel filter through went for a bit of an over take on the duel carriageway and i did notice a slightly better pull. Only slightly though. Also fifth gear seems to have better pull.
 Now seems that 3rd, 4th AND 5th are the greatest creations known to mankind. 

[MC71]

 Should be using 99 RON as a matter of course. As its only a few quid extra to fill up with better go go juice it's a no brainier not to. If you gat your car mapped, I would say its essential.

 

[taylor]

I always use v-power, but the one time I didn't use it I seen a tiny drop in my mpg, so always stick to v-power now, makes me happier knowing I'm using some of  the best fuel

[Adam_]

Watch this if you said it doesn't make a difference to run a higher octane fuel.

[scottm72]

Watch this if you said it doesn't make a difference to run a higher octane fuel.

ok i watched it and all it proves is there is no difference in performance unless you go to about 145mph, and if you listen to the end of the video she states in her opinion it is not worth paying the extra money, now if this is experts testing it how are you guys saying you can feel a difference ???
looks like the difference is just imagined,,,,, i filled my tank today for the first time with high octane and noticed no difference and im sure none of you guys where at 145mph testing it.
if anyone has any more video links then would be usefull,,, dont know if there is a top gear one out there

[Adam_]

Watch this if you said it doesn't make a difference to run a higher octane fuel.

ok i watched it and all it proves is there is no difference in performance unless you go to about 145mph,

"About a second after I booted the throttle there is a noticeable difference in grunt".

and if you listen to the end of the video she states in her opinion it is not worth paying the extra money, now if this is experts testing it how are you guys saying you can feel a difference ???
looks like the difference is just imagined,,,,, i filled my tank today for the first time with high octane and noticed no difference and im sure none of you guys where at 145mph testing it.
if anyone has any more video links then would be usefull,,, dont know if there is a top gear one out there

Nope nothing other than the old Fith Gear tests.

I have my own opinion, this has been influenced by many tuners in the market, and professionals in fuel development. My 2P.

[scottm72]

yeah i here what you are saying, i think a more in depth study would need to be found, the fifth gear test for example didnt do any tests with regards to it beinga  cleaner fuel for your engine and all they tested was bhp so would like to find another test out there 

[blackmagic]

I've always used vpower or tesco 99. I have to say I've always noticed quite a marked difference between the standard and higher ron. I only compared the two when i was standard tho. It's worth remembering that it might take some miles / few trips before the engine adapts to the fuel and also get rid of last standard fuel. So you might not notice the difference immediately. Something these tests don't really do.
It's a performance car so I put performance fuel in it.

[scottm72]

I've always used vpower or tesco 99. I have to say I've always noticed quite a marked difference between the standard and higher ron. I only compared the two when i was standard tho. It's worth remembering that it might take some miles / few trips before the engine adapts to the fuel and also get rid of last standard fuel. So you might not notice the difference immediately. Something these tests don't really do.
It's a performance car so I put performance fuel in it.

yeah but i dont trust the oil companies, would like to see an independant test to help understand a noteable difference rather than just taking their word for it, i think it will be a better fuel but if anyone comes across an unbiased poll would like to read

[dmac1969]

After 2 years with my GTI I can vouch for the fact that there is a definate , albeit small , difference in the way the car goes when fuelled with 99RON. Theres more pull in the mid range , it idles smoother and I get 2 or 3 MPG more over using 95. I try to use V Power or Tesco Momentum 99 at all times.

[scottm72]

After 2 years with my GTI I can vouch for the fact that there is a definate , albeit small , difference in the way the car goes when fuelled with 99RON. Theres more pull in the mid range , it idles smoother and I get 2 or 3 MPG more over using 95. I try to use V Power or Tesco Momentum 99 at all times.

ahh f**k it i will start using the tesco momentum 99 as its close to me,,,,, may be nicer for the engine and idling smoothness is something that is nice,,,,,, cheers guys

[MC71]

yeah but i dont trust the oil companies, would like to see an independant test to help understand a noteable difference rather than just taking their word for it, i think it will be a better fuel but if anyone comes across an unbiased poll would like to read

Why the mistrust of oil companies. 

RON (Research Octane Number) is a standard measure of the performance of motor fuel. The higher the octane number, the more compression the fuel can withstand before detonating. Fuels with a higher octane rating are used in high-compression engines that generally have higher performance.

Only use 99 in your car. It's one reason why we have SPS Plus switches with our REVO maps, incase we have to put the sh*te stuff in the car, we can change the settings so that the car will be fine run on it. Somebody with a better technical answer (and understanding) can correct me if wrong.

 

[scottm72]

yeah but i dont trust the oil companies, would like to see an independant test to help understand a noteable difference rather than just taking their word for it, i think it will be a better fuel but if anyone comes across an unbiased poll would like to read

Why the mistrust of oil companies. 

RON (Research Octane Number) is a standard measure of the performance of motor fuel. The higher the octane number, the more compression the fuel can withstand before detonating. Fuels with a higher octane rating are used in high-compression engines that generally have higher performance.

Only use 99 in your car. It's one reason why we have SPS Plus switches with our REVO maps, incase we have to put the sh*te stuff in the car, we can change the settings so that the car will be fine run on it. Somebody with a better technical answer (and understanding) can correct me if wrong.

 

with regards to the mistrust of oil companies,,,, my wife has worked as a principal safety engineer for several oil companies,,, you should see the stuff that goes on - its scary s**t
as for the technical stuff -   emmm ok  - not arguing with you,,, will start using the 99 as said in previous answer

[john87]

I'd agree to an extent that using super unleaded can cause a placebo effect... However when I was on holiday my dad used my car and put half a tank or 95 in it. When I drove the car upon return it was noticeably flat between 4-5.5k revs and only found out later that day that he had put in 95 RON. It might not make a performance difference in the cars they tend to perform this test on (1.4 astras and the like) but it does in the GTI