Standard or premium unleaded?

louie12 said:
Apologies if this has been covered many times before but I was wondering if using premium unleaded makes any difference and is worth paying the extra?
Use Shell V-power nitro. It's got a lot of stuff to clean out the crap that's built up and prevent further build up. Yep, marketing is rife in all industries, but if you've got a nice engine why put cheap juice in it?
Check link below for the tests to prove their claims.
https://www.youtube.com/watch?v=4WPfLnVuQyM
 
DMC63 said:
louie12 said:
Apologies if this has been covered many times before but I was wondering if using premium unleaded makes any difference and is worth paying the extra?
Use Shell V-power nitro. It's got a lot Yep, marketing is rife in all industries, but if you've got a nice engine why put cheap juice in it?
Check link below for the tests to prove their claims.
https://www.youtube.com/watch?v=4WPfLnVuQyM

Please tell me where to find this 'cheap juice' of which you speak!

So far I've only found 'hideously expensive juice' and 'you've really got to be sh1tting me juice' at the pumps around here.
 
DMC63 said:
louie12 said:
Apologies if this has been covered many times before but I was wondering if using premium unleaded makes any difference and is worth paying the extra?
Use Shell V-power nitro. It's got a lot of stuff to clean out the crap that's built up and prevent further build up. Yep, marketing is rife in all industries, but if you've got a nice engine why put cheap juice in it?
Check link below for the tests to prove their claims.
https://www.youtube.com/watch?v=4WPfLnVuQyM

Cheers for that. Next fill-up I'll give this a go.
 
GreyZed said:
Please tell me where to find this 'cheap juice' of which you speak!

So far I've only found 'hideously expensive juice' and 'you've really got to be sh1tting me juice' at the pumps around here.

Costco!

Mike
 
For about 2-3 years I kept data on all of my mileage and fuel used, and I concluded that Shell V Power was cheaper in pounds per mile than Tesco Regular unleaded (a limited test I grant you). I ran the test with a Honda S2000 (2.0), a Toyota MR2 MK3 (1.8), and a 1990 Vauxhall Tigra (1.4), and all vehicles showed enough of an efficiency improvement to be worth the extra cost of the premium fuel, with the bigger engines showing the bigger gains.

It's worth noting the the benefit was only seen after a number of tanks being run through the car, and there were obviously a number of other factors that will have affected the results, but I'm a tight ass Chartered Accountant, and the results were more than good enough for me to stick to Shell V Power (now Nitro) ever since, despite it "appearing" to be more expensive.

If I can find the data that I collected then I'll put it up on here, but I've changed PCs a couple of times since, so I might have to go digging for the data.

Jimi
 
RickRob said:
mattyp said:
Not really necessary unless you have a Z4MC imho

Or a Z4MR!

I only get pops and bangs on the overrun with premium fuel.

How did you find this out. :o

Super every time for a performance engine. Even more so if that engine is force fed. :wink:
 
^^^
You all know this already but the above sounds correct. I remember the test they did on 5th Gear more than a decade ago (available on YouTube) and it definitely comes after a few tanks. Main issue for me is that the highest octane is strongly recommended for my/our cars (not all of them, I know). It was even recommended for my E36.
Stevo
 
I notice a massive difference using Premium Unleaded over standard! It's alot more responsive and the drive is much smoother. However, I will always stay away from Murco Premium... every single time I've filled up with it the drive is sluggish and it just doesn't feel a joy to drive.
 
buzyg said:
RickRob said:
mattyp said:
Not really necessary unless you have a Z4MC imho

Or a Z4MR!

I only get pops and bangs on the overrun with premium fuel.

How did you find this out. :o

Super every time for a performance engine. Even more so if that engine is force fed. :wink:

Out here in the sticks there aren't so many petrol stations. One time when I was almost running on fumes the BP petrol station didn't have any "Ultra" so I filled up,with "normal". It was only once - honest!
 
GreyZed said:
DMC63 said:
louie12 said:
Apologies if this has been covered many times before but I was wondering if using premium unleaded makes any difference and is worth paying the extra?
Use Shell V-power nitro. It's got a lot Yep, marketing is rife in all industries, but if you've got a nice engine why put cheap juice in it?
Check link below for the tests to prove their claims.
https://www.youtube.com/watch?v=4WPfLnVuQyM

Please tell me where to find this 'cheap juice' of which you speak!

So far I've only found 'hideously expensive juice' and 'you've really got to be sh1tting me juice' at the pumps around here.

LMAO GreyZed.....too true!
 
I run mine on vpower only, it probably makes no difference but it's better fuel and I do find my mpg improved when I switched, its been run on only vpower for over 3 years now
 
Beetlegav said:
I run mine on vpower only, it probably makes no difference but it's better fuel and I do find my mpg improved when I switched, its been run on only vpower for over 3 years now

I'm not sure it's that good Gav? Look what it's done to your suspension! :P
Rob
 
RickRob said:
buzyg said:
RickRob said:
Or a Z4MR!

I only get pops and bangs on the overrun with premium fuel.

How did you find this out. :o

Super every time for a performance engine. Even more so if that engine is force fed. :wink:

Out here in the sticks there aren't so many petrol stations. One time when I was almost running on fumes the BP petrol station didn't have any "Ultra" so I filled up,with "normal". It was only once - honest!

:telloff:
 
I had always thought the M required Premium due to the vanos unit.

If I had the turbo version and it was an option, I would run E85 all day long! It burns colder, and allows for more timing and less knock :happyclap:
 
Kihtay said:
I had always thought the M required Premium due to the vanos unit.

If I had the turbo version and it was an option, I would run E85 all day long! It burns colder, and allows for more timing and less knock :happyclap:

I think there are quite a few on here who run E85 and others E86 and some even E89
 
If you show efficiency you anit driving your Z right. The way I cane mine I could never work out mpg on different fuels 97 Ron or 99 Ron. All I know is it's a performance engine and to get the best out of it you use the best fuel.

ps On a recent drive to Wales on my own average was 18 mpg :thumbsup: and it was all Mikes fault when in second at 6000 rpm that sound is fantastic.
 
ZermattV said:
Kihtay said:
I had always thought the M required Premium due to the vanos unit.

If I had the turbo version and it was an option, I would run E85 all day long! It burns colder, and allows for more timing and less knock :happyclap:

I think there are quite a few on here who run E85 and others E86 and some even E89

I think you have to make changes to the LPFP to run E85 longer term, irrc.
 
louie12 said:
Apologies if this has been covered many times before but I was wondering if using premium unleaded makes any difference and is worth paying the extra?

I would use it for a whole month just to clean out the engine then go back to normal
 
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