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Post by PG on Sept 2, 2021 19:52:00 GMT
E10 unleaded was onsale from yesterday, replacing the previous E5. Super-unleaded is still E5 for at least the next five years.
It seems that nearly everything since 2000 and before for many manufacturers don't have a problem running on it. But from what I've read, the running is not the issue. It's just a bit less efficient so slightly lower power and mpg. It seems it is the leaving of E10 in a car (or lawnmower, strimmer etc) that is not used much that is the issue. As the higher ethanol content makes water absorption (and subsequent fuel separation) more of an issue and E10 is more likely to damage hoses, pipes and seals when left for longer periods.
So I'm thinking that although the XFR will run on E10, I'm probably going to use super in it from now on as it does not get that much use and the fuel will sit in the tank for a few weeks at a time. Similarly I went out yesterday and filled up the mower fuel cans with super just to be safe.
What's everyone else going to do?
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Post by LandieMark on Sept 2, 2021 19:54:05 GMT
Well, according to the government checker, the MX-5 and the Discovery are both OK on E10, although I filled the Discovery up with super the other day.
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Post by Martin on Sept 2, 2021 20:11:34 GMT
I’ve always used Super on my petrol engined cars, the Boxster and Golf required it, the 7 series didn’t but always got Tesco 99 or whatever the latest name for vpower is.
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Post by ChrisM on Sept 2, 2021 20:50:16 GMT
I was concerned and am thinking of using super unleaded in the Fiesta..... however apparently E10 has been the standard petrol on sale in "mainland Europe" for a few years so our cars should be safe with it. The "major concern" I have read in the press is that cars that stand still for a long time may prove problematic to start up again, since E10 isn't as volatile as E5. However, E10 isn't as "energy dense" so expect less mpg, more topping up and presumably more pollution as a consequence
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Post by racingteatray on Sept 2, 2021 21:16:02 GMT
I do think this is a non-issue for most of us with modern cars. Petrol has been E10 in much of continental Europe was years already and the same cars with the same engines run just fine on it over there - in fact cars in countries like Germany, France and Italy tend to do much higher mileages than they do in the UK.
My car’s done nearly 40k miles, and I’d think at least 25k of that was covers outside the UK and probably most of that using E10 petrol.
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Post by Bob Sacamano v2.0 on Sept 2, 2021 21:20:39 GMT
I was concerned and am thinking of using super unleaded in the Fiesta..... however apparently E10 has been the standard petrol on sale in "mainland Europe" for a few years so our cars should be safe with it. The "major concern" I have read in the press is that cars that stand still for a long time may prove problematic to start up again, since E10 isn't as volatile as E5. However, E10 isn't as "energy dense" so expect less mpg, more topping up and presumably more pollution as a consequence Less pollution, you mean. That’s the point of the change. |
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Post by Deleted on Sept 2, 2021 22:11:04 GMT
I am now on super for the foreseeable future. Where this will go I have no idea.
Apparently when a car sits for a while the water content splits out, that's the explanation I had but the real answer is probably close to it.
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Post by racingteatray on Sept 3, 2021 7:14:47 GMT
I am not sure when or where super suddenly became 12p a litre more expensive. It used to be 4-5p and I don't really get why the difference is now so great other than a form of price-gouging.
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Post by Tim on Sept 3, 2021 7:37:07 GMT
If I put super unleaded in my mower will it go faster?  |
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Post by johnc on Sept 3, 2021 8:01:23 GMT
I've always used Shell V-Power in the M5 and I guess my lawnmower and hedge cutters will need to be treated to the same from now on. It's not a major issue but as Racing has said, the price of Super has increased more than ordinary fuel recently and that can only be profiteering.
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Post by Boxer6 on Sept 3, 2021 8:04:28 GMT
I am not sure when or where super suddenly became 12p a litre more expensive. It used to be 4-5p and I don't really get why the difference is now so great other than a form of price-gouging. Nail-head.  |
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Post by PetrolEd on Sept 3, 2021 10:27:57 GMT
I only ever use Super and V-Power when I can. The Volvo runs on boat juice so not an issue.
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Post by Bob Sacamano v2.0 on Sept 3, 2021 10:33:49 GMT
V-Power and the like are wonderfuel marketing scams. I wish I'd thought of them. Very few vehicles actually require them exclusively.
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Post by Tim on Sept 3, 2021 11:05:36 GMT
I ran the M5 on V-Power for a few thousand miles and noticed a) no improvement in economy and b) no improvement in performance.
I did notice a loss of performance on my bank balance though.
At the same time my brother in law noted a 25% (!) improvement in economy with his E46 323Ci together with better response but then he never actually filled the tank to give a proper baseline measurement and he does appear to be susceptible to certain aspects of marketing (e.g. for a while he would only wear Karharrt t-shirts because they were 'the best by far' in whatever criteria he measured t-shirts on).
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Post by racingteatray on Sept 3, 2021 16:01:51 GMT
I treat the 440i to the occasional tank of super but it doesn’t require it as standard. The web says you should really use super to get the best out of the MPPSK I had fitted but I think I am insufficiently Queefy to be able to detect the difference.
The last car I owned where you could notice the difference was a Mk2 Golf GTI 16v - “valvers” definitely ran better on 98 octane.
And IIRC the Alfa wanted 98 octane too - but then in Russia it cost about 40p a litre so It have been rude not to.
Since then all my BMWs, including the Z1s and M5, have been ok with regular 95.
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Post by LandieMark on Sept 3, 2021 20:48:52 GMT
It all depends on what the car is mapped for fuel wise whether super is worth it, ethanol aside.
The Legacy always ran terribly on 95 and fine on VPower. The ignition timing of the TVR was set assuming minimum 98 Ron, so that is what it got, almost exclusively.
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Post by alf on Sept 15, 2021 7:58:18 GMT
The XFR doesn't need Super and gets plenty of use, and anyway no-one would notice a few % drop in power. I'm fairly sure I've run it on higher % of ethanol than 10% in Germany.
The Porsche however could, in the winter, sit for some time, and the best policy there is to have as full a tank as possible, and use Super. A good school friend of mine works in fuel distribution and assured me some years ago that petrol is fine for a year or more (I was asking as it often sat in the Caterham, or jerry cans, for a few months).
For quite some time - it must be well over a decade, probably more like 15 years - all OEM's have had to quote power figures running on 95RON and make the cars work on that. I personally feel the "need" to use Super, for regularly used high performance cars, is a self-imposed additional tax many keen drivers choose to pay...
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Post by Blarno on Sept 15, 2021 10:26:37 GMT
I won't be using E10.
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Post by Alex on Sept 15, 2021 19:31:21 GMT
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Post by Boxer6 on Sept 15, 2021 19:54:55 GMT
That's why!!  |
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Post by bryan on Sept 15, 2021 20:14:35 GMT
I'll run mine on premium, I guess the lawnmower too!
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Post by Stuntman on Sept 15, 2021 20:38:14 GMT
My cars usually get Tesco 99 but occasionally they get a tank of whatever.
The last fills on the Yaris and the M3 have been with E10 and they've been fine.
Given that I don't do particularly high mileage these days, the cars will continue to get Tesco 99 or V Power or similar most, or all, of the time.
I used to run the M3 on normal petrol but switched to Tesco 99 about 2 years ago and I haven't really noticed a significant difference in either performance or economy.
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Post by chipbutty on Sept 16, 2021 15:14:21 GMT
Thread with pictures is en-route ??
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