Hmmm the old indirect injection diesels were less fussy over fuel but it is the fuel pump you are risking if you put some bio oils/ veg oils in a Diesel, even the old ones as they are really too thick.

Hmmm the old indirect injection diesels were less fussy over fuel but it is the fuel pump you are risking if you put some bio oils/ veg oils in a Diesel, even the old ones as they are really too thick.

And it's worse with modern  electronic and/or high pressure pumps because they need more lubricity than veg oil offers.

When my fuel light comes on I stop at the first available fuel station and look for the pump with 'diesel' written on it.

When my fuel light comes on I stop at the first available fuel station and look for the pump with 'diesel' written on it.

I stop at the 1st pub for a pint,

Then look for my Shell station :-)

Rather than start a new thread I'm resurrecting this one. My cupra 280 benefited from 99 RON, especially when it was performance mapped, but does anyone notice an improvement in economy or performance using higher cetane rated fuel with the 190 PS engine? I'm still running mine in, so not in a position to do a proper comparison. 

HMM - Years ago, I drove a Golf van that worked equally well with cheapo supermarket derv, or HI class Pump stuff. I had a colleague with a Ford Fiesta van ,that swore, that he could get higher speeds in each gear change( by going to limiter in each gear) using Superv derv. Personally, I've found on a range of cars and vans that derv is derv ,and on my 1.4, cheaper works better and gets more miles, so now I just buy by proce per litre, rather than by name. Designer stuff is nice, but but like clothes, over rated

Unsophisticated diesel engines that just need Heavy Oil and air are hardly going to need anything other than the Minimum Standard as sold in the UK. They just need to get hot and run, you can make fuel out of any old crap and get them to run and pollute as has been going on for decades.

Some newer engines have more issues in running efficiently and not costing money to the owners with DPF issues, regenerations etc.

 

Designer stuff as you call it is a choice that those running more modern vehicles might find are worth the few pence a litre extra, 

or not, but some old Derv drinker / smoker will probably benefit not in the slightest from it.

 

It is good that choices are there so that people can make up their own mind and splash their cash as they see fit.

I fuel up in topaz stations here - formerly shell and statoils until they sold off RoI operations - my old octy likes it, better than tesco diesel which it felt sluggish on, and thats the only supermarket fuel over here.

theres one chain, Amber, whose fuels i never use - consistently cheapest, but ... petrol feels like low octane crap, and the diesel sluggish and poor mpg. It also caused havoc with fuel filters on works vans when our local topaz (fuel contract) closed ti relocate and a short term deal got done for amber to accept our cards. The vans that were filled most regularly from the amber all needed filter changes within a couple of months - nothing to do with service intervals, one went through 2filters in 5 wks as it was only filled at the amber.. those of us who fuelled up at other topaz stations had no issues..

And i recall my dads freelander sport having filter issues, and he used to fuel up at the amber station too... i never saw the link at the time as i was too young to really pay attention, but courtesy of all that - ill pay the extra €1/tank for branded thanks very much...

I have noticed no difference on my Mk3 vrs tdi Octy between cheap supermarket fuel or high performance stuff, to all intents and purposes it runs exactly the same and I get the same range on a tank full. I'm not saying this is in any way a scientific fact but I'm just going to keep putting asdas standard cheap stuff in.

Maybe it is worth keeping a record or just being aware of your fuel consumption over the longer period of ownership with VW Engine Euro 5 TDI vehicles what ever fuel you use.,

just to see if things over the seasons stay the same pre and post the Volkswagen Fix.

Just out of interest or in case you need recompense from Volkswagen.

 

Or just keep filling up and dont bother.

Ive always used vpower diesel and bg244, I get over 700 miles per tank in winter and slightly more in summer, I don't vent the fuel tank to take more just fill to click, I use vpower as a premium fuel for its cleaning properties not its effect on performance, I've seen bore pics of vehicles that have used the supermarket fuels and it's not pretty, also it's well known in the trade that the inferior fuels clog up egrs and fuel lines, I will never use the supermarket fuel but all this could be hype and placebo, however if I'm happy and the car is running smoothly, I for one will keep up the farce and never take VW offer of the upgrade in Ecu and flow adjuster, oh and I've just done fuel filter and it was like new ? 40k miles

Edited 23 January, 201610 yr by seboni121

I have noticed no difference on my Mk3 vrs tdi Octy between cheap supermarket fuel or high performance stuff, to all intents and purposes it runs exactly the same and I get the same range on a tank full. I'm not saying this is in any way a scientific fact but I'm just going to keep putting asdas standard cheap stuff in.

I see this as something my sister was told by a little garage she took her bog standard Astra to . They told her that it'd run better on 98, rather than 95, even although the coding plug was set to 95, something I'd found on a high performance Vauxhall engine set to run on 95, when I had the head off I was prepared to decoke valves etc, but the head was as clean as when it left the factory. Performance on 95 was equal to a Golf GTI, so I'm not convinced that you need high grade fuel, unless engine is mapped/tuned for this, rather than lower grade fuel . Like oilburning ,I find no difference between cheap supermart or dear petrol station stuff, except the price .

I'm glad ,that someone agrees with me, after #32. I did forget to mention that at one time in my service career, the hire company gave an XR2, in lieu of my company car. It also was set to run on 95, and although I did try it on higher octane stuff, it didn't respond in terms of economy or performance, so it was back to 95. 

Ah memories,

like 3 decades ago now and Ford introduced the lean burn engine to the XR2, less emissions and less power.

& the decade when Royal Dutch Shell introduce their new Formulation Fuel and destroyed so many engines.

'Formula Shell' 1986...

 

.................

As to Super Unleaded Petrol.

Higher Octane petrol is not always about extra power or speed, it can be efficient running, 

and lower emissions, 

and as we know VW can do with help in achieving that.

http://volkswagen.co.uk/need-help/owners/Fuel

Edited 24 January, 201610 yr by GoneOffskiroottoot

I just run both my cars on shell's normal diesel,

 

have never used shells v-power diesel altho i did run my mk1 octy on v-power petrol,

 

altho i think my old smoker peugeot 306 d-turbo would run on just about anything i put in tank that resembled oil,

 

but i wouldn't try it in my common rail volvo xc90 d5

Those 309/306 Peugeot would run on just about anything!!! Old mercedes deisel were the same if it was oily they would run.

Ah memories,

like 3 decades ago now and Ford introduced the lean burn engine to the XR2, less emissions and less power.

& the decade when Royal Dutch Shell introduce their new Formulation Fuel and destroyed so many engines.

'Formula Shell' 1986...

 

.................

As to Super Unleaded Petrol.

Higher Octane petrol is not always about extra power or speed, it can be efficient running, 

and lower emissions, 

and as we know VW can do with help in achieving that.

http://volkswagen.co.uk/need-help/owners/Fuel

I remember getting pinking on "formula Shell" and curing it by putting in half a tank of Esso and waiting 5 miles til the line was flushed. After that we just never used "fS" again.

HMM - Years ago, I drove a Golf van that worked equally well with cheapo supermarket derv, or HI class Pump stuff. I had a colleague with a Ford Fiesta van ,that swore, that he could get higher speeds in each gear change( by going to limiter in each gear) using Superv derv. Personally, I've found on a range of cars and vans that derv is derv ,and on my 1.4, cheaper works better and gets more miles, so now I just buy by proce per litre, rather than by name. Designer stuff is nice, but but like clothes, over rated

And he was talking out of an orifice not normally used for the function! The Fester D had a pure mechanical governor which would work at the same revs regardless of what fuel it was getting.

Those 309/306 Peugeot would run on just about anything!!! Old mercedes deisel were the same if it was oily they would run.

Those 309/306 Peugeot would run on just about anything!!! Old mercedes deisel were the same if it was oily they would run.

That XUD would run off chip fat just fine

I bet when you take the lifetime environmental cost including broken bits, some of the eco cars are not so great.

Then again it's a lot about local air pollution now, which is quite different.

FWIW, all derv sold in the EU must be EN509 and all dervs sold in the EU must run on EN509. (I feel like an echo )

Unlike a spark engine, the exact ignition point doesn't really matter, it'll just blow up when it gets squashed enough.

Edited 25 January, 201610 yr by cheezemonkhai

I intend to fill mine with cheapest and nearest. My Honda accord didn't benefit at all from higher octane fuel, so unless designed or mapped to use higher rated fuels I think largely pointless.

Sent from my D6603 using Tapatalk

Edited 25 January, 201610 yr by stever750