2 minutes ago, Offski said:

You are on about that remap again.  Did it pull OK when standard?

One thing is clear the gear indicator system is variable and the speeds were higher before the remap, so it would appear it can tell that 467NM will pull easier at low speeds compared to the 400NM (as tested not claimed) when standard. Always used 99 octane since new nearly 14 months and closing in on 14,000 miles.

14 minutes ago, Gerrycan said:

Petrol is a pretty good solvent, diesel less so but I am sure diesel formulations contain sufficient deterg3nt for normal usage.

Millers evidence would hardly be truly independent would it?

 

In my experience petrol is pretty hopeless at removing hard carbon deposits. I have to use more aggressive stuff that shifts it much easier.

 

In the US the EPA mandate use of detergent additives in petrol and diesel. They seem to think its a good thing.

 

https://en.m.wikipedia.org/wiki/Top_Tier_Detergent_Gasoline

 

while in the EU

 

ANNEX_3_Detergent_ACEA_Proposal.pdf

 

There's no such thing as truly independent evidence, we have to use own judgment on what is presented.

 

22 minutes ago, Offski said:

You are on about that remap again.  Did it pull OK when standard, or did you not check?

 

Did you drive it new from the Dealers with the 95 ron in and go to the filling station and put the Super Unleaded in or did you tell them at the PDI 99 ron only.

I drove 3 miles to the nearest Shell garage to fill up with 99 octane but having just traded in my 148bhp petrol Superb it already felt a bit pokier even with 7 miles on the clock.

1 hour ago, Offski said:

 

 

Karoqer130,

Under your Plane at the left hand side, that is a 'TSI Petrol' i assume you have and not a TDI.

I have a 1.6 TDI 

Sorry, i see 'Petrol Blue'.

 

So winter diesel will be in a filling station tank near you soon.  Anti Waxing so important, in the Filling Station tanks and the vehicles.

14 minutes ago, Offski said:

Anti Waxing so important, in the Filling Station tanks and the vehicles.

 

Station tanks are generally buried a few metres underground so I imagine they are at nearly constant temperature all year round.

 

Generally is not much use generally if it is something else..

 

Well the ones that can still have the diesel wax are not, and you will discover where they are if you have not Winter Spec in.

Withour much thinking Pitlochry / Blair Atholl, Aviemore, Aboyne and even Biggar or New Cumnock come to mind.

 

Then tanks on farms and yards are not always underground.

 

Your car tanks are about 18" above the ground, that is between the Ground Frost and where the Air Temp is taken about 5-6ft up.

Edited 2 October, 20187 yr by Offski

Hey, not arguing with you, about vehicles or someone who decides to live near the Artic circle.  just joking

 

Standard scottish winter kit I imagine includes one of these 

 

 

Edited 2 October, 20187 yr by xman

There is a 68 page US report at https://newsroom.aaa.com/wp-content/uploads/2017/12/Premium-Fuel-Phase-II-Research-Report-FINAL-2.pdf that has these two summaries in the "Key Findings" section. The vehicles selected for testing were "vehicles where the manufacturer recommends but does not require the use of premium gasoline."  

 

 

 

 

When i was young lorry drivers and tractor drivers were still lighting fires under engines and fuel tanks at the start of the day.

Not for the insurance claim.

 

& carrying molasses or treacle and sand if needed to put on tyres to get up or down icy roads.

 

Lots of distilleries up north.

http://de-ice.co.uk/gritters

 

 

Real world, really high, and they will have the good fuel,

when not there will usually be comments on the difference on the BHP between European Models and ones in the USA,

& it is not always just height above sea level, same with South Africa and some models, GTI / R's as an example.

 

 

 

Edited 2 October, 20187 yr by Offski

38 minutes ago, Offski said:

it is not always just height above sea level, same with South Africa and some models, GTI / R's as an example.

 

Johannesburg is located in the eastern plateau area of South Africa known as the Highveld, at an elevation of 1,753 metres (5,751 ft).

1 minute ago, xman said:

 

Johannesburg is located in the eastern plateau area of South Africa known as the Highveld, at an elevation of 1,753 metres (5,751 ft).

When you land at Nairobi Airport in Kenya you are 5,200 feet above sea level, higher than the highest point anywhere in the UK.

My daughter lived in Quito for a couple of years 2850m 8700ft. Said walking the five flights of stairs to her flat was a real effort that left you breathless.

4 minutes ago, xman said:

My daughter lived in Quito for a couple of years 2850m 8700ft. Said walking the five flights of stairs to her flat was a real effort that left you breathless.

The KICC is the tallest building in Nairobi at 28 floors. Took the lift up and ran down those 28 floors when I was 45 years young and my legs were like jelly. Could barely stand up and SWMBO nearly died laughing. True story. Been to Kenya 7 times since 2004, beautiful place and lovely people.

Arrgghhh, another regular vs. super unleaded thread!

 

I just want the truth 

 

I'm not bothered about an extra few percent of power, my primary objective is component longevity. Assuming the car is serviced regularly will my 1.4 TSI 150PS ACT live longer if I use super unleaded?

 

It has done 3,000 miles since new and I've tried both regular and super unleaded (Sainsbury's) and not noticed any difference, but then my driving is sedate (it's a family-filled SUV after all).

 

If I thought an extra 5p per litre was doing my engine good then at 8,000 miles per year I'd happily use super unleaded all the time. The car is a keeper, it'll be owned and run by me until it dies. Will using super unleaded prolong the engines life?

 

Edited 2 October, 20187 yr by silver1011

Might prolong the spark plugs life, and that might prolong the ignitions coils life, and with a 1.4 TSI and especially a ACT / COD that might turn out as being important.

 

As will be stopping using long life oil, but only time will tell.

If the 23 pence a gallon extra gave no extra power & just 3 mpg more or no MPG more but you notice the Oil temp indicated being a bit lower will that be enough.

Cooling oil uses energy if oil needs cooled, and energy comes from fuel.

24 minutes ago, silver1011 said:

Arrgghhh, another regular vs. super unleaded thread!

 

I just want the truth 

 

If I thought an extra 5p per litre was doing my engine good then at 8,000 miles per year I'd happily use super unleaded all the time. The car is a keeper, it'll be owned and run by me until it dies. Will using super unleaded prolong the engines life?

 

 

On the previous gen 1.4tsi in my Superb and looking through my Spritmonitor figures I don't think my fuel economy improves with super unleaded although it seems to have more "pickup" however listening going slowly uphill with the windows down (when in France as it happens):-

• regular petrol = you can hear a distant "pinking" (I have sensitive hearing and you'd never hear it with the windows up)
• super petrol = you can't

 

To me "pinking" = future problems because of potential piston rattle/damage/wear so my tsi will be fed with super unleaded where possible

 

 

Edited 2 October, 20187 yr by bigjohn

39 minutes ago, Offski said:

Might prolong the spark plugs life,

 

Whats the theory behind that ski?

How bad the one bad plug of Twinchargers were from cars that owners that just used 95 ron looked.

In even less time /miles than the crap OEM plug, just the one that was often burned out just as when owners used Super Unleaded.

 

That is extreme though because those engines had / have an intake manifold that cooks one cylinder.

 

So maybe no issue with 140 & 150 PS TSI / TFSI, and ACT / COD.

 

Another theory of mine.

UK Shell V-Power Nitro + and Long Life oil used together are the Spawn of the Devil.   

But that is just ridiculous obviously,  just my experience though.  & if i owned a TSI i would give the Royal Dutch Shell stuff a swerve.

Edited 2 October, 20187 yr by Offski

Just read this document and had some thoughts based on what I could understand

 

CC_HOF_Webinar_Combined.pdf

 

It has a graph showing how Ethanol increases octane rating, looking at the graph for premium fuel approx 2 points increase at 5% concentration.

 

Thought 1: Sainsbury's Super/ BP ultimate is currently 97RON and thought to be ethanol free. Tesco Momentum is 99 and has 5% ethanol according to Greenergy's sampling data. So is the fundamental difference just the Ethanol content?

 

Thought 2: Presentation claims Ethanol increases charge cooling, not sure exactly what this means but could it mean cooler combustion temperatures? (Thinking ski's beloved 1.4 twinchargers)

 

Thought 3: As eluded in the presentation, higher ethanol content allows lower octane base stock to be used. So again from the graph todays regular 95RON E5 fuel has a base stock of 93RON, when they introduce E10 the base stock will drop to 91RON.

 

All academic but maybe worthy of further thought.

 

October 12 2018 is the date when all petrol station fuel pumps must display ethanol content under new EU regs. E5 in a circle for (up to?) 5% ethanol for example. On pump and nozzle.

 

https://movolytics.co.uk/fleet-management-software/fuel-management/new-fuel-labelling-standard

Edited 2 October, 20187 yr by xman

Australian base stock is 91 Octane (with its very high 140 ppm sulphur content), mixed with 10% Ethanol octane rating rises to 94 and with 85% Ethanol it rises to 105 Octane.

Only 'flex-fuel' adapted vehicles can run normal petrol and E85 due to its 'corrosive' nature, and apart from one vehicle that was locally manufactured (Holden Commodore V6) I'm really not sure what others sold here can run it. I believe power was actually up using E85 but consumption was atrocious.

About 30 years ago when I first arrived in Aus there was a bit of a scandal where some scurrilous petrol retailers were illegally adding ethanol to petrol (for greater profit since it was not taxed) which caused problems for some vehicles as it melted their fuel lines.  Now of course adding ethanol has been legitimised and modern cars can take E10 without such issues.

 

Here is a link to the Ricardo Ethanol engine from back in 2009 that was to compete with mid range diesel efficiency, obviously the concept did not take off. 

https://www.adandp.media/articles/ricardos-ethanol-boosted-direct-injection

 

i have tried them all and it still cuts out maybe not as much but still does it maybe time for a change as my last 3 skoda karoq have all done it

7 years later...