Performance fuel

[Jackie Treehorn]

@Mattwilko92

I think ppl are prepared to use better tyres or oil as it will have benefits, however the fuel was (as stated in the handbook) suggested to only have an effect on the R, and not the GTi.  If VW have updated this advice it is interesting and something to try, but many original decisions were based on the handbook advice which said "don't bother" if i remember correctly. 

I am one who has used these fuels in the past in UK and Europe on cars (think its 102ron in Germany at the Ring)  But didn't bother in the GTi as I mentioned above.

The VW UK website says: (as per link posted somewhere above) "For most vehicles standard unleaded is fine (95RON) but for GTI and 'R we recommend super unleaded (98RON)."

From the horses mouth, so to speak.

I know, that's what I mean by the info differs from the handbook if I remember correctly. The handbook said don't use it it will not improve the vehicle, the website says  98 is recommended, which must mean it has benefits and will improve?

[Jackie Treehorn]

@Mattwilko92

I think ppl are prepared to use better tyres or oil as it will have benefits, however the fuel was (as stated in the handbook) suggested to only have an effect on the R, and not the GTi.  If VW have updated this advice it is interesting and something to try, but many original decisions were based on the handbook advice which said "don't bother" if i remember correctly. 

I am one who has used these fuels in the past in UK and Europe on cars (think its 102ron in Germany at the Ring)  But didn't bother in the GTi as I mentioned above.

The VW UK website says: (as per link posted somewhere above) "For most vehicles standard unleaded is fine (95RON) but for GTI and 'R we recommend super unleaded (98RON)."

From the horses mouth, so to speak.

All that happens if you don't run it on 98+ ron is it doesn't "FSI" so you lose between 10-30 BHP depending on the model.

Can you explain how I lose upto 30 bhp, and what FSI that I can't get means? I thought the stratified fuel was used at idle and part throttle to ensure smooth  delivery and non strat was then included when at WOT to wash and add fuel.  Didn't think it had anything to do with fuel ron...

[LRWmotorsport]

10 - 30 bhp.
Would be really interested to understand a bit more about that.
10 seems excessive, 30 is mind boggling.

Would never have imagined a production engine to be that intolerant to octane number.

Where's the info from? Any links please?

[jjgreenwood]

@Mattwilko92

I think ppl are prepared to use better tyres or oil as it will have benefits, however the fuel was (as stated in the handbook) suggested to only have an effect on the R, and not the GTi.  If VW have updated this advice it is interesting and something to try, but many original decisions were based on the handbook advice which said "don't bother" if i remember correctly. 

I am one who has used these fuels in the past in UK and Europe on cars (think its 102ron in Germany at the Ring)  But didn't bother in the GTi as I mentioned above.

The VW UK website says: (as per link posted somewhere above) "For most vehicles standard unleaded is fine (95RON) but for GTI and 'R we recommend super unleaded (98RON)."

From the horses mouth, so to speak.

All that happens if you don't run it on 98+ ron is it doesn't "FSI" so you lose between 10-30 BHP depending on the model.

Can you explain how I lose upto 30 bhp, and what FSI that I can't get means? I thought the stratified fuel was used at idle and part throttle to ensure smooth  delivery and non strat was then included when at WOT to wash and add fuel.  Didn't think it had anything to do with fuel ron...

Well I'm no auto technician so you probably know more than me. The training from years ago told me it was more to do with the sulpher content of the fuel and the quality of the fuel. As FSI relies on injecting fuel at the last second to produce a bigger bang and therefore more power for it to work properly it requires the right type of fuel so for FSI engines we were told to recommend super. We were told if super/low sulpher fuel wasn't used then the engine would still work but wouldn't FSI meaning the improvement in BHP for the FSI engines simply wouldn't be there. This improvement equated to about 10%, for example a 1.6 petrol had 105ps but with FSI tech had 115ps. 

[mattwilko92]

@Mattwilko92

I think ppl are prepared to use better tyres or oil as it will have benefits, however the fuel was (as stated in the handbook) suggested to only have an effect on the R, and not the GTi.  If VW have updated this advice it is interesting and something to try, but many original decisions were based on the handbook advice which said "don't bother" if i remember correctly. 

I am one who has used these fuels in the past in UK and Europe on cars (think its 102ron in Germany at the Ring)  But didn't bother in the GTi as I mentioned above.

The VW UK website says: (as per link posted somewhere above) "For most vehicles standard unleaded is fine (95RON) but for GTI and 'R we recommend super unleaded (98RON)."

From the horses mouth, so to speak.

All that happens if you don't run it on 98+ ron is it doesn't "FSI" so you lose between 10-30 BHP depending on the model.

I’m sorry but i don’t believe that for one second.

[jjgreenwood]

@Mattwilko92

I think ppl are prepared to use better tyres or oil as it will have benefits, however the fuel was (as stated in the handbook) suggested to only have an effect on the R, and not the GTi.  If VW have updated this advice it is interesting and something to try, but many original decisions were based on the handbook advice which said "don't bother" if i remember correctly. 

I am one who has used these fuels in the past in UK and Europe on cars (think its 102ron in Germany at the Ring)  But didn't bother in the GTi as I mentioned above.

The VW UK website says: (as per link posted somewhere above) "For most vehicles standard unleaded is fine (95RON) but for GTI and 'R we recommend super unleaded (98RON)."

From the horses mouth, so to speak.

All that happens if you don't run it on 98+ ron is it doesn't "FSI" so you lose between 10-30 BHP depending on the model.

I’m sorry but i don’t believe that for one second.

Could well all be nonsense but that's what we get told

[eatontrifles]

The cost over a year to use higher RON fuel compared to normal - not enough for me care about.

For 10,000 miles a year - around £136 based on current figures (113p/l for 95, 122p/l for V-power).

[hog_hedge]

The cost over a year to use higher RON fuel compared to normal - not enough for me care about.

For 10,000 miles a year - around £136 based on current figures (113p/l for 95, 122p/l for V-power).

Or buy Tesco 99 @ 115.9/litre at the moment

[Watts]

The cost over a year to use higher RON fuel compared to normal - not enough for me care about.

For 10,000 miles a year - around £136 based on current figures (113p/l for 95, 122p/l for V-power).

Or buy Tesco 99 @ 115.9/litre at the moment

Exactly (both of you) - considering how much people will pay for dubious performance upgrades this is a bit of a bargain! For me, at around 8k miles per year on Tesco 99, it works out at less than £5 a month

[Gulfstream11]

Camp I'm in.