The best fuel to use in a RS4 B7 - many opinions

[Bladerider]

Oh, this thread again...

+2

Top right corner mate........searchy searchy !!



Better than a debit anyway

[WilkinsonRS4]

How many tight arses do we have that run 95 then? Never run anything recognized as a performance car on anything less than 97 but i know people do. Part the package and running costs for me.

So V Power is 98 yes??
What's Saibsburys and Tesco RON then??

[adsgreen]

How many tight arses do we have that run 95 then? Never run anything recognized as a performance car on anything less than 97 but i know people do. Part the package and running costs for me.

So V Power is 98 yes??
What's Saibsburys and Tesco RON then??

It's used to be 98 and is now 99.
I suspect it might be due to the requirement to have a percentage of bio ethanol in them now.

To be honest, for our cars Ron is pointless - you need the Mon value as this is the resistance to knocking under high load and rpm

[WilkinsonRS4]

How many tight arses do we have that run 95 then? Never run anything recognized as a performance car on anything less than 97 but i know people do. Part the package and running costs for me.

So V Power is 98 yes??
What's Saibsburys and Tesco RON then??

It's used to be 98 and is now 99.
I suspect it might be due to the requirement to have a percentage of bio ethanol in them now.

To be honest, for our cars Ron is pointless - you need the Mon value as this is the resistance to knocking under high load and rpm

Mmm I didn't know that mate, so is V Power much better than Tescos and Saibsburys then?

[PetrolDave]

How many tight arses do we have that run 95 then?

The thing is that running 95 on the RS4 actually INCREASES the cost - how come? 95, in the UK at least, has a higher sulphur content which causes more frequent pre-cat cleaning to take place - and since that's done by increasing the amount of fuel injected and adjusting the timing to make the exhaust gasses hotter it reduces the mpg by around 10% compared to using 98.

So unless the price premium for 98 is over 10%, which at today's prices means 13p per litre more, then running 98 actually costs less than running 95.

That means any tight arse using 95 is actually increasing their costs...

[adsgreen]

Mmm I didn't know that mate, so is V Power much better than Tescos and Saibsburys then?

Hard to say - It used to be that vpower had higher mon rating (only 1 or 2 points) but with the new formula not so sure.
Bloody hard to get specs on fuel!

[adsgreen]

Here's momentum's spec sheet - Mon of 87 is pretty good.
http://www.tescopfs.com/momentum99/specifications

Old shell one
http://www.formulastudent.com/docs/defa ... f?sfvrsn=2

[Youngben]

Sainsburys do 97. As said Going to Tesco 99 from Sainsburys was night and day for me and i wont be going back. Only noticed it with the RS4 though.

[WillRS]

I've never run any of my cars on anything other than super / vpower / ultimate for as long as I can remember - the extra cost is fairly insignificant compared to depreciation, running costs etc etc over a year

recently i've been running the rs4 on Tesco Momentum as it was retarding the timing (when dynod at mrc) when running on what should have been a tank of V-Power

admittedly i've not been back up to MRC to see if it made a difference lol but the fact that its a. pay at pump at my local tesco (less faffing) and b. about a 10 mile round trip to fill up means "popping out to get some fuel" is much more fun than going to the one a mile away from me

[neilparf]

recently i've been running the rs4 on Tesco Momentum as it was retarding the timing (when dynod at mrc) when running on what should have been a tank of V-Power

I found this too - the simple fuel switch improved the figures...

[RS04YOB]

I use Morrisons own fuel

[WillRS]

[John Johnson]

On the plus side I bet he gets a good few £5 shopping vouchers

[neilparf]

Also, you can meet Ant and Dec at the Fish counter. Everyone's a winner.

[nial335]

I only go from mosborough into Sheffield ( meadowhell area ) and it's £30 in two days if I use it ... Not good lol

I got my RS4 from John Holland Sales in Meadowhall