Super Unleaded petrol

I would hazard a guess that you would get a almost undetectable to a normal human being increase in performance, probably a slightly cleaner pull through the rev range and a few extra miles out of your tank.

Sometimes it can also take a few fills for a car to recognise the better fuel, so any of the above may take a couple of tanks to make themselves seen/felt.

Oh, and welcome to the forum Katherine, I shall in customary Z4-forum etiquette suggest you maybe post a "Hello I'm new" post and whatever you do, don't forget to post pics of your Z..!!!!

Nige.
:thumbsup:
 
Hi Nige,
thanks for the info. I will try it for a few weeks and let you know how it goes. :)
I can see that I will be using the forum quite a lot as I have only owned my Z4 for 2 weeks.
Kath :wink:
 
Hi Katherine and welcome

I'd actually advocate the use of 'super'. You'll find the increased price is rewarded by a slight increase in MPG that offsets the higher price. The car will feel more perky and have better pick up. For sure it won't make a 2.2 a drag strip car, but if you use and enjoy the performance I'm sure you will feel it. I run mine exclusively on Tesco 99

Do a search on the forum and you'll find lots of threads about which fuels people use.
 
I echo that, unfortunately we can not get 100 Ron in the UK, but I was using it on a recent trip abroad (Vpower Race) and on my M, the fuel consumption turned the same as a 3.0 which was running 98 in his car.

The higher the better in my book, especially for longer term use.
 
Hi everyone,
thanks for your replys to my earlier inquiry regarding Super Unleaded Petrol.
I am a newbie and have been greatly impressed by the instant information that you gave me.
"Are there any negetive things that I should look out for in my new beemer going forward.? :|
Kath
 
katherine12 said:
Hi everyone,

"Are there any negetive things that I should look out for in my new beemer going forward.? :|
Kath
Click to expand...

Yes - whenever going forward look for close cars and kerbs.... :rofl:

Seriously don't get paranoid about things. They are really reliable. Keep it serviced, carefully washed and waxed and it will last you forever. Get the hood down and enjoy the driving.
 
Welcome, you are going to love your car.

Nice to see another girlie on here.

These guys are great and the forum is really firendly, far better than any other forums i have been on.
 
Hi GAZA62
My Z4 is a real eye catcher> Thanks for your reply. I look forward to loads of advice and helpm from you all. Will try and get a photo for forum.
:P
 
Welcome along :)

I use normal 95 octane fuel in my 3.0i. I'll be honest and say I've never tried higher octane fuel in my Z4 but did try it in previous cars and noticed neglible differences. Both were high-revving n/a engines and I'd be lying if I said I noticed a difference in performance, but it certainly helped my Clio 172 idle a lot smoother. I've heard it makes more of a difference in turbo'd engines and more highly-tuned engines, but not sure of the truth in that.

Ally
 
Voodoo said:
Sometimes it can also take a few fills for a car to recognise the better fuel, so any of the above may take a couple of tanks to make themselves seen/felt.
Click to expand...

Does this count for performance and/or economy? I used a tank full in my 3.0 when I first got it, but couldn't tell a difference on either front tbh.
 
I think it's to do with the ecu readjusting to the different RON value of the fuel, and it takes more that one tankful for that to happen (or so I'm led to believe). Would hence probably affect performance and economy...

But I could be wrong!
 
Ive found that I can tell the difference.

engine is smoother and a couple more mpg per tank :D

took a few tanks to fully appreciate though...
 
So who can do the maths; how many more MPG do you need to achceive to make the extra 5p/litre super worthwhile? (Not being clever btw I haven't got a clue :rofl: )
 
Well if it's 5% more to buy, it needs to return 5/6% more or above to make it worthwhile. If you achieve 30mpg normally then you'd need to achieve 32mpg or more to make it worthwhile.

You'd therefore need to get ~385 miles to a tank instead of 360.

Just scale it up or down according to whatever MPG you get.
 
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