put some super unleaded in mine, think it was the v-power, on a standard 1.4 it made no difference at all as i expected, convinced myself i could get in a higher gear at lower speeds but i tried the same thing after a few fill ups of normal octane petrol and it was exactly the same from what i could tell.
dont really beleive in it cleaning anything either tbh, people run cars on supposedly crap supermarket 95 for the entire life of the car with no problems at all, if it does actually clean anything then is it really needed?
dont really beleive in it cleaning anything either tbh, people run cars on supposedly crap supermarket 95 for the entire life of the car with no problems at all, if it does actually clean anything then is it really needed?
markbuts3 said:You might want to look at the way fuel is rated before you make a statement about US fuel being a lower octane
http://en.wikipedia.org/wiki/Octane_rating
If you take a look at the picture on the right, that's a USA pump offering 5 octane levels... the highest being 91... im sorry i was ONE off lol..
And the main quoting from that website...
iv never really researched into it but when i was a kid my dad used to go nowhere but shell (maybe because he had nice cars but tbh not all of them were that nice 
) he would even go out his way to go to a shell garage. I think i picked that up from a kid and just have always went to shell and filled with optimax, don't know if its better or not was just imprinted into my brain as a kid 
) he would even go out his way to go to a shell garage. I think i picked that up from a kid and just have always went to shell and filled with optimax, don't know if its better or not was just imprinted into my brain as a kid 
cov_racer said:
Wikipedia is a good start.
The octane rating alone does not denote a more powerful burn though premium fuels may be engineered to burn more powerfully.
As I understand it the higher octane rating simply results in less early ignition in the chamber and so the point of ignition is closer to the optimum - more efficient so less fuel needed per bang to get the same power output at the crank?
Thank you, someone who can read and comprehend
The US rating is (RON+MON)/2
For example, Optimax is rated at 98RON and 86MON
(98+86)/2=92
Our pumps don't tell you the MON rating though so it's difficult to compare to US rated fuels. It's not that easy to find the MON of our petrol either, they don't publish it readily anywhere. If you look at the RON and MON tests you'll see the MON is actually the more important one aswell as the test is done at higher revs.
The US rating is (RON+MON)/2
For example, Optimax is rated at 98RON and 86MON
(98+86)/2=92
Our pumps don't tell you the MON rating though so it's difficult to compare to US rated fuels. It's not that easy to find the MON of our petrol either, they don't publish it readily anywhere. If you look at the RON and MON tests you'll see the MON is actually the more important one aswell as the test is done at higher revs.
True, however, US "Regular" petrol is 87(R+M)/2, that would equate to ~91-92RON over here, therefore most Americans still use lower octane petrol than we do.markbuts3 said:Read your own quote again. 93 is the highest in the US.
But look above as to why that isn't low
I took a picture of "the future" when I was in America in 2004:
V-Power at least 2 years before us! lol
sri_alan said:
what im getting at is people use the "crap" petrol supermarkets sell for the live of the car with no problems at all, so is all of this "cleaning" actually needed or just something we all believe will help?
im sure i read on here or NPOC that the injectors are self cleaning and dont like injector cleaner being used (or something like that anyway), it could be true and clean the system but just look at all of the crap halfords stock for cleaning injectors etc, its all junk. just my opinion obviously but if everything these companies sell is crap then Optimax and V-power could well be the same
Z
zedy
Guest
i put some one shot redex injector cleaner in mine some time back, WONT be using it again,
THO V-power is a must!! cleaning agents and car runs smoother.
Wud go for the normal 95 unleaded but theres a price difference and they wouldnt stock it for no reason especially at that price so i always use it
THO V-power is a must!! cleaning agents and car runs smoother.
Wud go for the normal 95 unleaded but theres a price difference and they wouldnt stock it for no reason especially at that price so i always use it
"..but just look at all of the crap halfords stock for cleaning injectors etc, its all junk.."
I recently ran a can of 10k-Boost through my car when my throttle was sticking (thread here) and it immediately fixed the problem and noticebly improved performance on a pretty neglected engine that had been run on standard supermarket 95 fuel for 6 years so I don't think all these things can be dismissed as junk.
"..they wouldnt stock it for no reason especially at that price.."
Wellll.. I can think of a hundred products that are almost identical to a cheaper product but people will pay more because they think it's better than the cheaper alternative (Nurofen and generic Ibuprofen for example).
Trading standards law in the UK does not allow false advertising claims which is why, for example, adverts can not say that Nurofen does something that generic Ibuprofen doesn't but can say that Nurofen Plus (which contains Ibuprofen and Codeine) does.
However, I've seen no claims anywhere that a particular brand of 95-ron fuel is better than another brand of 95-ron fuel but specific claims are made of Optimax and V-Power and I'm pretty sure the manufacturers would have to be able to substantiate those claims.
I recently ran a can of 10k-Boost through my car when my throttle was sticking (thread here) and it immediately fixed the problem and noticebly improved performance on a pretty neglected engine that had been run on standard supermarket 95 fuel for 6 years so I don't think all these things can be dismissed as junk.
"..they wouldnt stock it for no reason especially at that price.."
Wellll.. I can think of a hundred products that are almost identical to a cheaper product but people will pay more because they think it's better than the cheaper alternative (Nurofen and generic Ibuprofen for example).
Trading standards law in the UK does not allow false advertising claims which is why, for example, adverts can not say that Nurofen does something that generic Ibuprofen doesn't but can say that Nurofen Plus (which contains Ibuprofen and Codeine) does.
However, I've seen no claims anywhere that a particular brand of 95-ron fuel is better than another brand of 95-ron fuel but specific claims are made of Optimax and V-Power and I'm pretty sure the manufacturers would have to be able to substantiate those claims.
It was a technical service bulletin by Infiniti for the G20 in 1994 iirc.Game said:
Infiniti TSB: ITB94003
Due to the introduction of contamination resistant "pintle-less" fuel injectors, Infiniti no longer recommends using fuel injector cleaners on vehicles with injectors of this design. Use of fuel injector cleaner on these vehicles, while providing little cleaning benefit, may cause corrosion of the fuel injector coil and eventual failure of the injector.
A
Awooga Guy
Guest
So does that above bulletin apply to the SR20 engine? /noob 
Darren198712
Just chillin'
A few pennies per liter and then a full tank is a few quid and then after a few years you should have enough to do a engine swapGeeTeeEye said:
if your planning to keep the car for ages then why not but if its a run about would you spend a few more quid a full tank on a run about
apart from that I would rarly use 97rons on my car. If i do use 97rons I would use the supermarket stuff. I normally top up at BP and i use 95rons but its almost the same price if i top up at tesco at 97rons.
I top up aprox 50 liters a week
95Rons 92.9x50 = £46:45
97Rons 99.5x50 = £49.75
£3.30 a tank
£3.30 x 52 = £171.6 a year (thats if I am driving around town if I am on a mission to London or something thats more)
anyway 170 a year and then within a few years you should have enough for a SR20DE conversion
I heard this too and using that engine cleaner stuff that you put in the petrol tank may make things worse i heardsri_alan said:
I am guessing no if your car is stock and yes if its not a NA or with some heavy modsAwooga Guy said:So does that above bulletin apply to the SR20 engine? /noob
A
Awooga Guy
Guest
Definitely doesn't apply to the GTi engine then? I was tempted to get some Redex the other day, glad I didn't now.
Darren198712
Just chillin'
I am only guessing let some one back me up lolAwooga Guy said:
on the other hand as Mark quoted it will create corrosion to the fuel injector cleaner after time but does the Vpower clean the engine. how are you meant to get better performance on a modded SR20 when you can't use 97 but only use 95
I also heard that the Mitsu's Evo's and Scoobies are designed to use 97+