Shell V-Power Nitro+
Discussion
Rioja said:
I use the shell V Power , but do I really need to?
Well, if your car can advance the ignition it will produce more power. I like this sort of petrol due to the cleaning additives.I did post on here a long while ago pictures showing the benefits V unleaded(non-super)
Edit, ha ha just looked at yourcar ... my opinion you should big time! ... run the tank out ... fill up and then take the battery off for 10 mins .... then see
rigster2 said:
I appreciate that this has been done to death but Shell V Power is not manufactured and distributed under the similar agreement as normal Shell fuel.
V Power comes direct from the Refinery that blends it.
It's what i do.
My friend works for Shell and is involved with this fuel and the Ferrari F1 team. He assures me that it is distributed under the same agreement as regular Shell, i.e. the base fuel comes from the refinery and the Nitro+ additives are added to it. He also confirmed that Shell have no petrol/diesel refineries in the UK.V Power comes direct from the Refinery that blends it.
It's what i do.
Andyuk911 said:
Edit, ha ha just looked at yourcar ... my opinion you should big time! ... run the tank out ... fill up and then take the battery off for 10 mins .... then see
Yes! Lovely car. Is pulling the battery necessary? Thought the sensors automatically detected the higher octane fuel.......and you might loose the radio code?Berw said:
I will not use V power because if the car is left then when the benzine evaporates of it leaves all the additives behind in the fuel system and blocks all sorts of things, not such a big problem in the fuel injected Porsche but a huge problem on the webbers that are fitted to my 7s, Try leaving a little V power in a saucser and let it evaporate off and see what it leaves behind, may not be a true test but I avoid V power when ever I can.
That is interesting. What would you recommend using instead of V power
ChrisW. said:
Doesn't the name worry anybody ?
It screams "oversell" to me ....
Will anybody be mapping EC's to this ?
If not, it's pure marketing.
And I always use V-power. But this smacks of bullsomething or other ..
Surely if your car has knock sensors, then the ECU will advance the ingition as far as possible until it detects pre-ignition? It doesn't need "mapping" to do this.It screams "oversell" to me ....
Will anybody be mapping EC's to this ?
If not, it's pure marketing.
And I always use V-power. But this smacks of bullsomething or other ..
fergus said:
Surely if your car has knock sensors, then the ECU will advance the ingition as far as possible until it detects pre-ignition? It doesn't need "mapping" to do this.
No. Cars have a set advance and if they encounter problems retard from this point. If your car is running full advance on 97 octane then adding 99 will produce no benefit.It's doubtful if on non-turbo engines there's any benefit, unless the mapping is changed to increase advance and even then it'd be small. On turbo engines it's be different as quite often they get very hot under high-loads and do go into partial retardation. An increase in octane can improve this. Of course again the real benefit is only felt if you run more advance or higher boost than was otherwise possible.
SilverPorker said:
That's interesting. I've used a tank of what I thought was the older non-nitro+ petrol in my Audi 2.0TFSi this week. I did notice that I managed 395 miles out of a tank full, whereas I can usually only squeeze 370m tops, and I haven't been driving particularly differently in terms of lead footedness. I wonder if the newer stuff has been in use for some time.
Still have 1/4 tank left in my Boxster from when I filled up a fortnight ago. Will fill up this weekend, although like others have posted, I'm not expecting to notice any difference in a normally aspirated car.
Possibly due to the increased ambient temperatures? Engine getting up to temp quicker.Still have 1/4 tank left in my Boxster from when I filled up a fortnight ago. Will fill up this weekend, although like others have posted, I'm not expecting to notice any difference in a normally aspirated car.
Guyr said:
No. Cars have a set advance and if they encounter problems retard from this point. If your car is running full advance on 97 octane then adding 99 will produce no benefit.
It's doubtful if on non-turbo engines there's any benefit, unless the mapping is changed to increase advance and even then it'd be small. On turbo engines it's be different as quite often they get very hot under high-loads and do go into partial retardation. An increase in octane can improve this. Of course again the real benefit is only felt if you run more advance or higher boost than was otherwise possible.
Thorney Motorsport measured a 40BHP loss when a BMW E46 CSL was run on 95-RON compared to 99-RON. (They used both Tesco and V-Power high-octane that produced very similar results and some crap, cheapo stuff for the low-octane). So yes, there can be a bl**dy-great-big benefit, even for non-turbo engines. It's doubtful if on non-turbo engines there's any benefit, unless the mapping is changed to increase advance and even then it'd be small. On turbo engines it's be different as quite often they get very hot under high-loads and do go into partial retardation. An increase in octane can improve this. Of course again the real benefit is only felt if you run more advance or higher boost than was otherwise possible.
I've just filled up with it. Can't feel any difference at all although the obc is showing an increase in mpg over my usual avaerage but I haven't driven far enough yet for it to average out.
Octane is a measure of resistance to knock (which is detonation of the fuel/air mixture due to compression rather than the spark from the spark plug.
Higher octane will not give you more power - FACT
What it does is allow you to run more advanced timing which can increase power. Some (most modern) cars will adjust the timing slightly to obtain optimum performance. This is where some gains can be made. (in reality the car has probably retarded the timing due to lower octane fuel. The manufacturers do this to prevent engine damage if lower octane fuel is used when, for example, the desired fuel is not available in a region)
So you're not going to get a huge kick in the pants just by upping the the octane rating of your fuel. You may get the engine to perform as it should though rather than it being held back by lower octane fuel than the manufacturer intended.
Octane is a measure of resistance to knock (which is detonation of the fuel/air mixture due to compression rather than the spark from the spark plug.
Higher octane will not give you more power - FACT
What it does is allow you to run more advanced timing which can increase power. Some (most modern) cars will adjust the timing slightly to obtain optimum performance. This is where some gains can be made. (in reality the car has probably retarded the timing due to lower octane fuel. The manufacturers do this to prevent engine damage if lower octane fuel is used when, for example, the desired fuel is not available in a region)
So you're not going to get a huge kick in the pants just by upping the the octane rating of your fuel. You may get the engine to perform as it should though rather than it being held back by lower octane fuel than the manufacturer intended.
I've filled up with Nitro+ a couple of times in my Box 986S now. No perceivable difference I'm afraid, either with performance (wasn't expecting any TBH), or fuel economy. I guess the long term benefits in terms of cleaning agents and anti-friction enhancement will be next to impossible to ascertain outside of a lab. I'll just have to console myself with knowing I'm putting the highest quality fuel available in my cars and this has to have benefit vs. using other petrol types... perhaps...
The said, the OBC in my turbo charged Audi does report an extra 15-20 miles range when filling up though.
The said, the OBC in my turbo charged Audi does report an extra 15-20 miles range when filling up though.
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