Unleaded Fuel Preference?

[Reichter]

This was years ago (10 yrs) but when i was researching each fuel. I downloaded each data sheet and compared them. Each brand have their own specific formula. Maybe from the same refinery, but tweaked specs per brand. Id have to redownload them all again to see the differences, but im happy to stick with what i figured out as above.

I would put mobil synergy 8000 as no. 2 but it is hard to find now.

[gadget007a]

added to the quality of the fuel there is the condition of the service station. there was a BP servo nearby that whenever we filled up soon after a large amount of rain, the cars didn't run well.

fuel my local Shell servo contains a small amount of water in it also, i found this out when i was constantly having to clean out the fuel tank of the lawn mower due to water build up. if i fill up a 5l fuel can and leave it sealed for a week or two i notice approximately a spoonfull of water accumulated in the can.

I always try to find a servo that has a high turnover of fuel so it has less time sitting in their tanks for all impurities to settle out.

[brad]

What's everybody's brand of unleaded fuel preference for their Octavia 162 tsi?

Mine used to love Shell V-Power. I stopped buying it when the shopper dockets became useless and started getting 98ron from the local independant Westside Servo (supplied by Mobil). His fuel was amazing. Then he stopped stocking 98ron.

Now I mostly use Caltex 98 or 7-11 98(mobil). Occasionally I put in BP. The car runs pretty much the same on all of them.

100ron gives a nice boost in torque but the economy is all over the shop.

If I run V-Power these days the economy goes bad for a week or 2.

For those that are anal retentive about fuel economy:

Average consumption over 154,000km = 6.7L/100km

United 100ron e10 = 6.8L/100km
United 98ron e10 = 7.0L/100km
Mobil 98ron = 6.6L/100km
Westside 98ron (local independant) = 6.3L/100km
BP Ultimate 98 = 6.7L/100km
Caltex Vortex 98 = 6.5l/100km
Shell V-Power 98 = 6.7L/100km
Caltex 105ron E85 = 7.7L/100km

[Gerrycan]

For those that are anal retentive about fuel economy:

Average consumption over 154,000km = 6.7L/100km

United 100ron e10 = 6.8L/100km
United 98ron e10 = 7.0L/100km
Mobil 98ron = 6.6L/100km
Westside 98ron (local independant) = 6.3L/100km
BP Ultimate 98 = 6.7L/100km
Caltex Vortex 98 = 6.5l/100km
Shell V-Power 98 = 6.7L/100km
Caltex 105ron E85 = 7.7L/100km

I resemble that remark!
To be honest I have identified ambient temperature as having more effect on my fuel consumption than brand.
The E85 figures make sense as it has less calorific value per litre than petrol.

[brad]

I resemble that remark!
To be honest I have identified ambient temperature as having more effect on my fuel consumption than brand.
The E85 figures make sense as it has less calorific value per litre than petrol.

I find consumption increases in winter (<15 c). 20-24 degrees seems to be the sweet spot. As it gets hotter (30+) I assume the less dense air & heat soak increases consumption as well?

e85 - guzzles it down but amazing increase in power... then after about 40L the engine throws a CEL because the O2 sensor goes out of range.

[Gerrycan]

I find consumption increases in winter (<15 c). 20-24 degrees seems to be the sweet spot. As it gets hotter (30+) I assume the less dense air & heat soak increases consumption as well?

e85 - guzzles it down but amazing increase in power... then after about 40L the engine throws a CEL because the O2 sensor goes out of range.

I'd agree with most of that except I find that economy improves further at higher (30+) temperatures, less dense air requires less fuel (stoichiometry thingy?), but it is disguised by increased use of A/c. I'm keen but I do like some creature comforts.
Available power would definitely be affected adversely by higher temperatures though.

[notflyingscot]

Average consumption over 154,000km = 6.7L/100km

That's excellent figures for a "tuned" saloon car Brad.
I'm only averaging 8.7 over 19,000kms in our Superb but that's with DSG and at least 80% city/suburbs driving. I suppose it's about 250kg heavier than the Octavia also. Still, compared to the Falcon around town, its like a hybrid in comparison! Loving it. Just wish it did not have that suspect 7 speed DSG, other than that, hard to fault IMO.

[Antiplastix]

I think you should all get a life and stop playing with your "willys" 98 is 98. It all comes from the same place and a petro-chemist would be flat out telling the difference.

[bobski]

I'm only averaging 8.7 over 19,000kms in our Superb but that's with DSG and at least 80% city/suburbs driving. I suppose it's about 250kg heavier than the Octavia also.

I'm getting 7.4 for the first 10000ks in our Superb (50% open road) on almost exclusively 95 from woolworths (caltex). I tried Vortex for 3 fills and I didn't think it made enough of a difference to pay the extra and wait for the 98RON pump (I'm regional).

I found with the VRS (which definitely did like a diet of 98RON) that if you didn't keep the 98 up to it, you lost any benefit. But I didn't really have a preference after moving regionally Whatever was convenient - though I did blacklist a United after a bad belly of fuel - thankfully no damage just run badly. Got it serviced early because of that.

[Gerrycan]

I think you should all get a life and stop playing with your "willys" 98 is 98. It all comes from the same place and a petro-chemist would be flat out telling the difference.

I tend to agree, it is either compliant with the required Octane rating or it is not.
Fuels do deteriorate with age, and some storage facilities and even batches can be suspect.
It would be nice if there were a simple test if you suspect a particular fill up so you could take some action.

I know one station in NT ruined goodness knows how many diesels before they were stopped from selling more.