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I personally avoid ethanol additive fuel, as I've problems with it in the past. In the Range I'll usually use 95 or 98 but have used 'non' ethanol 91 before (not e10 but I think they only have to advertise it as ethanol when its above a certain percentage?) I have to say for the extra couple of dollars per tank, the 95/98 gets my vote. I dont about economy tho, as I tend to floor it often when I'm running the higher octane :burnrubber: so my economy is ruined anyway! :p
I also avoid E10 and usually run 95, with the odd 98 to give a bit of a clean. Didn't notice much difference between 95 and 98 on either the 4.0 or 4.6 motors.
The Mercs, I run 98.
The Commodore, I run 95.
All other vehicles I run 91 with the occasional tank full of 98 to clean the fuel system.
The cars do run better on 95.
Also beware of bad fuel. I always try to fill at a BP. I have never had any bad fuel there.
I agree with Mick - I have only ever filled up at my local BP except when I'm on a remote trip and have no other option. Even then I still look out for a BP if I can...
Mine lives on 95 premium. Nothing else.
My last tank I averaged 12.14L/100km with mixed highway/low range/town driving...
Works out that I get around 700km before the fuel light comes on...
Cheers
Keithy
Interesting Keithy, I usually fill up at Caltex and use Shell where I can. Tend to avoid BP for philosophical reasons, but your figures make for a compelling reason to reconsider.
Back in my mis-spent youth.... I bought a brand new HZ Holden V8, the 4.2litre/253.
Apart from being a tad thirsty for its "power"...,it ran smoooothest on CALTEX, - which gave the worst mpg's, but gave a mpg or so more on BP and I think SHELL.
(it was a very long time ago....)
My daily driving was consistant enough to do the "A" / "B" comparisons with good repeatability. Only .08 to 1.2 mpg differance, but it was predictable.
- Average was 17 mpg.... :o
At the moment, I'm running UNITED E10 in their 95 octane. I've also advanced the timing a bit.... not far enough to hear any pinging on 'normal' 91.
So far, it seems to be running happier and I suspect better economy, but we'll have to wait for my new (non-leaking) fuel tank from LRA so I can obtain accurate figures.
Hope that helps. :)
1995 Classic Vogue SE, 3.9 gutless wonder...
There are a few 95 and 98 fuels out there that are a 91 with an octane booster, not a true cracked 95/8. The comments here are pretty much on the ball.
Some fuels have a few % ethonol mix and sold as standard fuel too - and thats not limited to the small chains or independents.
I normally use bp 95 where I can, and the cheapest lpg I can find.
There is nothing wrong with Shell or Caltex. Years ago I did regularly get bad fuel form Shell servo's for a while. At the time, filling up with Mobil solved the problem so I stuck with them. When they disappeared, I tried BP. I haven't had a problem with them so I have just stuck with them.Quote:
Originally Posted by PaulP38a