MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Peppermuncher on October 09, 2012, 11:43:38 pm
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Well! I've taken my first step into the world of high octane fuel. Ran the tank till pretty much empty today, filled up with £35 of tesco 99 ron. I put this amount in every 2 weeks, should I be seeing something in a month or so. I know its not going to be like re-map but will there be something?
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U go through £35 fuel every 2 weeks? Lucky u! Yea I find high octane makes a differnce. Engine runs smoother, pulls harder to red line and returns better mpg. I've always used high octane on all my cars. Made a move from shell vpower to tesco 99 & haven't looked back:)
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Well! I've taken my first step into the world of high octane fuel. Ran the tank till pretty much empty today, filled up with £35 of tesco 99 ron. I put this amount in every 2 weeks, should I be seeing something in a month or so. I know its not going to be like re-map but will there be something?
Filled up with £35 of Momentum 99 ????? :confused:, are you running a Moped?? :grin:, whenever I fill up the ED30 with Momentum it costs me £75 (altho that is only once every 3 weeks)
:signLOL:
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I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.
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I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.
You'd think so, but even on my 1.6 I noticed a distinct difference in torque and therefore i needed less throttle so the mpg went up. One time I went on holiday and left that car with my parents. When I came back I swore it wasn't running right. I then clocked on it was because they would have put regular fuel in it. I put in some V-Power and all was well again.
I've never run my 2.0T on anything other than V-Power or Momentum which I use interchangeably (apart from the odd fill of another brand's high RON stuff when I was caught short once). There's a reason VW and tuners recommend the engine is run on it!
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I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.
I used to run 95RON for about a year before I switched to 99RON. Ive switched back in the past a couple of times and the difference is quite obvious. The 95RON feels very "Flat" - especially at the top of the rev range. Throttle response is much better on the 99 too :happy2:
On N/A engines like the Civic Type-R it makes no difference to use 99RON, however every turbo car i've owned it makes a huge difference. The recent Fifth Gear fuel test proved that on a turbo car a few BHP gains are to be had :happy2:
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The first time at JKM I was running v power 99 and someone else was running normal 95 and there was a 3bhp difference. That could've come from anything saying that but both cars were standard ad the only difference was fuel iirc
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I have run both 95 and v power in my golf when it was standered.
I could feel a small difference in performance and mpg difference of about 2 or 3.
Now mine is mapped I don't bother with anything other than vpower.
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No GTI should be run on anything less than 97Ron, it even states this inside your fuel cap (it might even say 98Ron!)
Something to do with the FSI I think
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No GTI should be run on anything less than 97Ron, it even states this inside your fuel cap (it might even say 98Ron!)
Something to do with the FSI I think
You can run 95 but its states 98 is preferred.
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You won't notice the difference in power, but the engine should run smoother and will help to keep it clean inside. I always run mine on Tesco 99 although I think VPower would be better still (no stations particularly local here unfortunately).
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It's not advisable to use 95 ron all the time. There have been many reports of head gasket problems on cars that use 95 long term. Like George said, the fuel flap says to use 97 or higher. That's for a reason obviously.
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It's not advisable to use 95 ron all the time. There have been many reports of head gasket problems on cars that use 95 long term. Like George said, the fuel flap says to use 97 or higher. That's for a reason obviously.
Mine has 95 in small text and 98 in large text.
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on a stock gti would you think the disadvantage of the higher price 98 ron in terms of cost compared to the extra although little mpg balances itself out ?
i have only just got my car but been using normal unleaded, i never put my car anywhere near the red line so do you still think it is adventegeous to use the higher ron still,,, does it really make the engine run smoother ?, all my petrol cap says is minimum 95 ron ?
will quite happilly step up to v power etc but would like someones views on this
ps, filled my car twice since i got it, full to orange light on first tank = 300 miles, 2nd tank = 325 on 95 ron carefullish driving, will go for 350 next time lol
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I only do about 7k miles a year hence the small amount of petrol used. My main thoughts were about a tiny amount of extra umph! Not that it'll be noticed :sad1:
The benefits of being kinder and cleaning the engine combined with the slight increase of mpg. Even if it only adds 3mpg then that's about 8% more efficiency with only an extra 4% outlay. :P
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sounds good, i aint doing the math but will go with your saying,,,, upgrade fuel from now on, :happy2:
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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. :surprised:
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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.
:happy2:
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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
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Watch this if you said it doesn't make a difference to run a higher octane fuel. (http://www.youtube.com/watch?v=WTaBngvsPrc)
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Watch this if you said it doesn't make a difference to run a higher octane fuel. (http://www.youtube.com/watch?v=WTaBngvsPrc)
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
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Watch this if you said it doesn't make a difference to run a higher octane fuel. (http://www.youtube.com/watch?v=WTaBngvsPrc)
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.
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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 :happy2:
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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.
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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
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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.
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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
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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. :confused:
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.
:happy2:
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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. :confused:
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.
:happy2:
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 :driver:
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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 :happy2:
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Does it not take the ECU a few days to adjust to the differant fuel :surprised:
If it does, that would invalidate the test :fighting:
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^^ what I said then. :smiley:
Just to add at my work when a lot of the company cars were petrol. I tried vpower etc in a passat + skoda 1.8t which made a difference in performance. But in a 2.0 20v or 8v passat (none turbo) made no difference at all.
Most cars at work now tdi so can't do much testing since.
I think if you put it in a car designed for it or turbo then you'll get a gain else wouldn't bother.
Just what Ive found over the years. I'm only taking performance mind.
Try a few tanks and see what u think
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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 :happy2:
watch this -------
im sure it is better for the engine but would just like to see some evidence of that