Does anyone use Premium Diesel in the car?
Discussion
xjay1337 said:
Different cars will have different reactions
(in the above quoted i said 91octane, i meant 95, sorry).
as you surmise perhaps one engine is more sensitive than another.
but personally, and it's my view, i always run premium fuel unless i was running a literal banger lol
Very true but I suspect a tuned petrol car is likely to show a much more marked response to using premium fuel than a diesel in standard tune! If my 335i had been mapped I would have almost certainly used V-Power or an equivalent but in standard tune the benefits weren't sufficient to justify the extra cost IMO; I've not used premium diesel very often in my 335d but on the occasions I have I've not noticed a significant difference and therefore I feel the same applies as to the 335i (i.e. the extra cost doesn't appear to be worth it). That said there are plenty of people who swear blind they can feel an improvement in both standard-tune petrol and diesel cars and if that's the case then fine; just because I don't think the extra cost's worth it doesn't make it a fact so if others have a different view use the premium fuel!(in the above quoted i said 91octane, i meant 95, sorry).
as you surmise perhaps one engine is more sensitive than another.
but personally, and it's my view, i always run premium fuel unless i was running a literal banger lol
Edited by JNW1 on Thursday 18th February 14:15
gizlaroc said:
I take your word for it, I was saying the same thing recently when looking on the Audi forums at S4, however many argued 'strongly' that the new 3.0T was set up for 95 and 95 only, adding 98 ron made no difference at all and the timing was limited at 95.
However, doing research it seems that many of the Audi manuals now state that running on 95 ron has no impact on performance or consumption.
So not sure what to think.
A heavily turbocharged engine will generally benefit from the higher octane so it can run higher advance values, or at least not have them retarded. this is more true when remapped/tuned.However, doing research it seems that many of the Audi manuals now state that running on 95 ron has no impact on performance or consumption.
So not sure what to think.
Edited by gizlaroc on Thursday 18th February 14:00
from an audi forum from an a4 2.0T
but an S4.
it is very possible that the car is tuned to run on 95 so you won't "lose" power but you certainly won't lose anything by running a better fuel. especially on direct injection engines, anything that helps prevent carbon build up is useful and i would personally run 99 octane.
the benefits are there to be taken advantage of. and i know i love my cars so they get the best fuel, best oil, etc.
gizlaroc said:
No, my car was stock at the time. That graph was just from a search showing "N55 95 ron power graph".
Sorry, thought the graph you published was to show the difference on your car! A bit off topic but rather surprised if an Evolve remap gives almost 390bhp on an N55 engine; thought remaps on N54's were "only" around 375bhp and N55's were generally a bit lower (circa 360bhp) as a result of being less tuneable than the twin-turbo engine? Anyway, regardless of what Evolve's graphs may say, my N55 certainly didn't feel more than 10% up on power as a result of using V-Power!Sorry Mr beef, what a load of old bullocks, you appear to be spouting opinion as fact.
My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
Spoof said:
Sorry Mr beef, what a load of old bullocks, you appear to be spouting opinion as fact.
My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
Why not just add the likes of a Millers diesel fuel treatment to each tank which has all those additives in it anyway for approx 1p per litre, rather than 10p or more?My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
Plus then you can benefit from running cheap diesel with a consistent level of additives you control.
http://www.amazon.co.uk/Millers-Oils-Diesel-Power-...
Spoof said:
Sorry Mr beef, what a load of old bullocks, you appear to be spouting opinion as fact.
My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
I ran my 330d LCI almost entirely on the dearer diesel - BP Ultimate. It was always smoother than std diesel. I used standard when i was in an area where there was no Ultimate and I could notice the slight reduction in smoothness ... the car was not as nice. This was numerous times over a 3 year period and 20K miles and I am happy it wasn't in my head. Extra performance no. Smoother with BP Ultimate, yes My diesel runs smoother on premium derv, especially tickover - much like many others here have reported.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
I have to say I do think it makes a difference and I usually don't beleive what companies claim.
We used to use it for a while then stopped using it, within a day I noticed it would sound louder, wasn't as smooth and was black smoke coming from the exhaust every now and then.
I was not expecting those difference but when I noticed then happeneing I tried to think of why. I then went back to using additives and within the same day I noticed it running much better.
We used to use it for a while then stopped using it, within a day I noticed it would sound louder, wasn't as smooth and was black smoke coming from the exhaust every now and then.
I was not expecting those difference but when I noticed then happeneing I tried to think of why. I then went back to using additives and within the same day I noticed it running much better.
My local Land Rover specialist has also said he sees a lot less EGR faults on cars that have been run on decent fuel, so that's enough for me as EGRs on Range Rovers aren't cheap.
[/quote] ^ This seems to be the consensus of opinion with many diesel techs the sticky variable vane issue was good enough proof for me mentioned in my earlier post I can only speak as I find
but hardly rocket science if the fuel burns cleaner better detergents/additives etc etc 
as for the performance improvements I cant comment I dont run an oil burner I just maintain them I used to work for BMW and on countless occasions I saw their Diesel engines suffer from injector failures. On most occasions there was a manufacturing problem rather than an issue with fuel quality and were fixed under warranty, but not always. The one clear difference was that cheap fuel and premium fuels left all examples in vastly different condition. The technicians would point this out and, as a result, I will always use whatever branded super diesel I can find.
I have seen the results with my own eyes and V Power or the available alternative is well worth the money.
In 2010 a single fuel injector for a humdrum 320d was almost £340. That’s before fitting. Imagine seeing a bill for £1500 to replace all four out of warranty when the odd tank of posh derv could have helped!?! I think an extra £7-8 on a full tank is worth the extra. Same goes for petrol too.
I have seen the results with my own eyes and V Power or the available alternative is well worth the money.
In 2010 a single fuel injector for a humdrum 320d was almost £340. That’s before fitting. Imagine seeing a bill for £1500 to replace all four out of warranty when the odd tank of posh derv could have helped!?! I think an extra £7-8 on a full tank is worth the extra. Same goes for petrol too.
In my previous 535d I’d nearly always use premium diesel - the odd non premium tank economy was lower and power/ability to Rev quickly less so.
I use super petrol too.
Fifth gear did a scientific dyno test and proved it does give bhp boost and it’s the cheapest mod to do and saves the engine.
I use super petrol too.
Fifth gear did a scientific dyno test and proved it does give bhp boost and it’s the cheapest mod to do and saves the engine.
xjay1337 said:
gizlaroc said:
I take your word for it, I was saying the same thing recently when looking on the Audi forums at S4, however many argued 'strongly' that the new 3.0T was set up for 95 and 95 only, adding 98 ron made no difference at all and the timing was limited at 95.
However, doing research it seems that many of the Audi manuals now state that running on 95 ron has no impact on performance or consumption.
So not sure what to think.
A heavily turbocharged engine will generally benefit from the higher octane so it can run higher advance values, or at least not have them retarded. this is more true when remapped/tuned.However, doing research it seems that many of the Audi manuals now state that running on 95 ron has no impact on performance or consumption.
So not sure what to think.
Edited by gizlaroc on Thursday 18th February 14:00
from an audi forum from an a4 2.0T
but an S4.
it is very possible that the car is tuned to run on 95 so you won't "lose" power but you certainly won't lose anything by running a better fuel. especially on direct injection engines, anything that helps prevent carbon build up is useful and i would personally run 99 octane.
the benefits are there to be taken advantage of. and i know i love my cars so they get the best fuel, best oil, etc.
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