What petrol (or Gas for guy over the pond!) do you use?

Post by **sp3ctre** » Sun Jun 24, 2007 1:35 pm

I just use normal grade fuel... try to stay away from supermarkets and stick to BP and Shell, but never really use the "special" fuel.

Does it make much difference to performance and fuel economy?

enfield · Post by **enfield** » Sun Jun 24, 2007 1:40 pm

I only use Shell V-Power. In Canada, other brands have Ethanol in them and make the ///M 'cough'.

ovrkll · Post by **ovrkll** » Sun Jun 24, 2007 1:53 pm

I use premium grade (91 octane or better) or else the car pings under acceleration. As Enfield pointed out, ethanol mixes have been found to cause some problems with our cars. The premium grades have less ethanol (or none) than the regular grades of gasoline.

takedown8 · Post by **takedown8** » Sun Jun 24, 2007 4:18 pm

Will also be using Shell V-power from now on thanks to intgr8r's experiment.

Post by **sp3ctre** » Sun Jun 24, 2007 4:24 pm

takedown8 wrote: intgr8r's experiment.

What experiment is that then?

flyboyaj · Post by **flyboyaj** » Sun Jun 24, 2007 4:37 pm

I use 93 ontane. Once I accidentaly put 87 octane in and I did notice a difference in accelleration near the end of that tank. It felt like it took till the end of the next tank of 93 to get the full accelleration back. I put a 93 in with a 10% ethanol mix one time and it actually felt like it increased the performance a tad and I did get 30.1mpg off of that tank compared to the 28.6 that I normally average. But that mpg could have been influenced by so many other variables that I'm not convinced it was due to the ethanol. I had never heard that ethanol was known to have an adverse affect on our engines. Anyone have any more geek data or info about that? Or maybe a link to a site that has more details about ethanol in our engines?

takedown8 · Post by **takedown8** » Sun Jun 24, 2007 4:42 pm

sp3ctre wrote:
takedown8 wrote: intgr8r's experiment.
What experiment is that then?

Check it out:

http://www.zpost.com/forums/showthread. ... light=cold

Flycaster · Post by **Flycaster** » Sun Jun 24, 2007 4:49 pm

ovrkll wrote:I use premium grade (91 octane or better) or else the car pings under acceleration. As Enfield pointed out, ethanol mixes have been found to cause some problems with our cars. The premium grades have less ethanol (or none) than the regular grades of gasoline.

I don't doubt that you heard your car ping, but I find this surprising in that the engine's computer will adjust the timing in accordance with the octane rating, thus eliminating chances for pining. From what I've read and what other have posted, using regualr gas will in no way harm the engine, but might somewhat reduce high end performance and gas mileage.

ovrkll · Post by **ovrkll** » Sun Jun 24, 2007 5:01 pm

Maybe I should have been a little clearer.. hard acceleration.

I bought the car to drive hard, not dawdle about like a Sunday grandmother on the way home from church.

unionjack · Post by **unionjack** » Mon Jun 25, 2007 6:12 am

Premium (93 octane) only.

Rick Hunter · Post by **Rick Hunter** » Mon Jun 25, 2007 7:01 am

Shell V-Power, 92 Octane. Wish I could find higher...

Rick Hunter · Post by **Rick Hunter** » Mon Jun 25, 2007 7:37 am

sp3ctre wrote:I just use normal grade fuel... try to stay away from supermarkets and stick to BP and Shell, but never really use the "special" fuel.

Does it make much difference to performance and fuel economy?

Here's a good answer: Higher Octane Petrol

pvr · Post by **pvr** » Mon Jun 25, 2007 8:32 am

On the Scottish trip, hollpe had regular (supermarket) fuel and the other M's had 98 Shell. We got about 50 miles more out of a tank driving exactly the same (same speed / same route)

Post by **sp3ctre** » Mon Jun 25, 2007 9:14 am

pvr wrote:On the Scottish trip, hollpe had regular (supermarket) fuel and the other M's had 98 Shell. We got about 50 miles more out of a tank driving exactly the same (same speed / same route)

My maths ain't that great... does that mean it was worth paying the extra to get more miles? (take away performance for a sec)

pvr · Post by **pvr** » Mon Jun 25, 2007 9:20 am

at 40 litres, that is about £2 more for a tank, which equals to about 2 litres of petrol.

Getting 50 miles out of 2 litres would be nice ... so yes, it is worth it

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What petrol (or Gas for guy over the pond!) do you use?

What petrol (or Gas for guy over the pond!) do you use?

Re: What petrol (or Gas for guy over the pond!) do you use?