GTI fuel rating (95 RON)

[Bill_the_Bear]

 bill it does not matter if it is a different engine, the car is made to run on 95 so there is your answer, I think you are missing the point

I am suggesting that because of the variable timing the car may see improvements with higher octane.  This is not the case on older GTIs.  I would like to understand if that may is a will or a will not.

The guy on the video makes total sense and you are wasting your money with anything more than 95. I agree I run 5 gti's on 99 then tried them all on 95. Made no difference whatsoever to driving or mileage, it's a complete waste of money.

why does r-tech ask for the car to be run on 98 after a map then 

If r-tech changes the compression ratio it might need 98, or they might be telling porkies.

[Johnc41]

Another thing to remember with the higher octane fuels is that they're supposed to be cleaner with various additives, this is the main reason i use v power, i used BP fuel save once (one tank) and there was a noticable difference in the way the car ran, whether or not it affected power output i don't know but it felt worse.


I sometimes use Tesco momentum as well and although it feels like it runs a little smoother there is noticably more carbon build up on the exhaust tips than when using v power, these are my own observations and the reasons v power is my


Oh and Texaco fuel should be banned!! Absolute rubbish!

Regarding the one tank fuel, they say that you would need at least 3 full tanks anyway at least to notice any difference with different fuels, unless there was a problem with the fuel itself, there is no way you could notice any difference on one tank

[barrym381]

 bill it does not matter if it is a different engine, the car is made to run on 95 so there is your answer, I think you are missing the point

I am suggesting that because of the variable timing the car may see improvements with higher octane.  This is not the case on older GTIs.  I would like to understand if that may is a will or a will not.

The guy on the video makes total sense and you are wasting your money with anything more than 95. I agree I run 5 gti's on 99 then tried them all on 95. Made no difference whatsoever to driving or mileage, it's a complete waste of money.

why does r-tech ask for the car to be run on 98 after a map then 

If r-tech changes the compression ratio it might need 98, or they might be telling porkies.

cant see them having the reputation they have with telling porkies  so it must do something

[Johnc41]

 bill it does not matter if it is a different engine, the car is made to run on 95 so there is your answer, I think you are missing the point

I am suggesting that because of the variable timing the car may see improvements with higher octane.  This is not the case on older GTIs.  I would like to understand if that may is a will or a will not.

The guy on the video makes total sense and you are wasting your money with anything more than 95. I agree I run 5 gti's on 99 then tried them all on 95. Made no difference whatsoever to driving or mileage, it's a complete waste of money.

why does r-tech ask for the car to be run on 98 after a map then 

If r-tech changes the compression ratio it might need 98, or they might be telling porkies.

cant see them having the reputation they have with telling porkies  so it must do something

Like what? My first gti was remapped and as I said has over 100000 mile on it and still runs like a dream, it was remapped after 2000 miles

[Hawaii-Five-O]

Cat amongst the pigeons. Hehe

I'm with Johnc41 and the original American video - 95 RON all the way "unless" we get conclusive proof that the new GTI Mk7 can take advantage of higher octane fuels using variable compression ratios

[Johnc41]

 bill it does not matter if it is a different engine, the car is made to run on 95 so there is your answer, I think you are missing the point

I am suggesting that because of the variable timing the car may see improvements with higher octane.  This is not the case on older GTIs.  I would like to understand if that may is a will or a will not.

The guy on the video makes total sense and you are wasting your money with anything more than 95. I agree I run 5 gti's on 99 then tried them all on 95. Made no difference whatsoever to driving or mileage, it's a complete waste of money.

why does r-tech ask for the car to be run on 98 after a map then 

If r-tech changes the compression ratio it might need 98, or they might be telling porkies.

We'll bill my friend has a new Audi with vvt and he says he has tried it and has noticed no difference in power of fuel consumption
[/quote]

[Jimble]

Another thing to remember with the higher octane fuels is that they're supposed to be cleaner with various additives, this is the main reason i use v power, i used BP fuel save once (one tank) and there was a noticable difference in the way the car ran, whether or not it affected power output i don't know but it felt worse.


I sometimes use Tesco momentum as well and although it feels like it runs a little smoother there is noticably more carbon build up on the exhaust tips than when using v power, these are my own observations and the reasons v power is my


Oh and Texaco fuel should be banned!! Absolute rubbish!

Regarding the one tank fuel, they say that you would need at least 3 full tanks anyway at least to notice any difference with different fuels, unless there was a problem with the fuel itself, there is no way you could notice any difference on one tank

Your obviously correct mate and your opinion is the only one that matters.


Would this be the same "they" that say 99 Ron makes a difference?

[Johnc41]

Another thing to remember with the higher octane fuels is that they're supposed to be cleaner with various additives, this is the main reason i use v power, i used BP fuel save once (one tank) and there was a noticable difference in the way the car ran, whether or not it affected power output i don't know but it felt worse.


I sometimes use Tesco momentum as well and although it feels like it runs a little smoother there is
noticably more carbon build up on the exhaust tips than when using v power, these are my own observations and the reasons v power is my


Oh and Texaco fuel should be banned!! Absolute rubbish!

Regarding the one tank fuel, they say that you would need at least 3 full tanks anyway at least to notice any difference with different fuels, unless there was a problem with the fuel itself, there is no way you could notice any difference on one tank

Your obviously correct mate and your opinion is the only one that matters.


Sure mate whatever

[Johnc41]

I think Jimble your brain is playing tricks with you every time you fill up your car lol

[Bill_the_Bear]

John its still not clear to me what your mk5 running like a dream or your mates audi vvt have to do with the mk7 or octane, I'll be interested if you can explain the relevance.

I will gladly post some proof that some cars see improvement when I get home.  The question is is the mk7 one of them.