Petrol: E5 vs E10
Discussion
johnnie666666 said:
I have a 2015 Aston Martin V8 Vantage. (4.7L/430BHP). I have owned it for just a year and have always used super-unleaded petrol. This is now becoming stupidly expensive. Could anyone tell me the risks of switching to E5 fuel?
You say the “risks of switching to E5 fuel” I presume your referring to and considering standard unleaded. You must understand Premium fuel is 5% of renewable ethanol, standard unleaded being 10% personally I would never put E10 in any performance engine!johnnie666666 said:
Inside the fuel-flap it says that Aston Martin recommends RON98 for best performance.
in the handbook it says:
Recommended 98 RON super-unleaded for optimum performance. 95 RON minimum.
It will be fine on 95RON. My V8V has only ever known 95RON over the past ten or so years. It's now on around 56k miles. in the handbook it says:
Recommended 98 RON super-unleaded for optimum performance. 95 RON minimum.
Rolls-canardley said:
johnnie666666 said:
You say the “risks of switching to E5 fuel” I presume your referring to and considering standard unleaded. You must understand Premium fuel is 5% of renewable ethanol, standard unleaded being 10% personally I would never put E10 in any performance engine!
AFAIK the majority of ‘Super’ unleaded fuels, if not all are E5 or 5% Ethanol. Standard unleaded is now E10 or 10% Ethanol. This applies to Sainsburys, Shell, ESSO, Tesco and anyone else.
A small word of advise though, while you will pay less you will get around 10% more MPG from E5 Super compared to E10 Unleaded. E10 has less energy compared to normal fuel so you need ‘more’ for the same power. My 428i (2.0L 245PS turbo) does around 28-29MPG on E10 and 33-34MPG on E5 Super. Checked and tracked using Fuelio for nearly a year with only E5 for the last three months.
A small word of advise though, while you will pay less you will get around 10% more MPG from E5 Super compared to E10 Unleaded. E10 has less energy compared to normal fuel so you need ‘more’ for the same power. My 428i (2.0L 245PS turbo) does around 28-29MPG on E10 and 33-34MPG on E5 Super. Checked and tracked using Fuelio for nearly a year with only E5 for the last three months.
In a car like that I think you'll find that E5 pays for itself in increased MPG.
On a recent road trip (~1200 miles) I was getting around 30.4 MPG using E5 fuel. At one stop, the services were very busy and I couldn't find any E5, so I filled up with E10. For that stint my fuel consumption dropped to around 26.5 MPG - driving style and speed were unchanged.
I know that some people say it makes no difference to fuel consumption and real world tests have been done - but I think that was in quite old cars. Anything modern definitely gets better MPG from E5 - assuming that the E5 is 98 and the E10 is 95.
On a recent road trip (~1200 miles) I was getting around 30.4 MPG using E5 fuel. At one stop, the services were very busy and I couldn't find any E5, so I filled up with E10. For that stint my fuel consumption dropped to around 26.5 MPG - driving style and speed were unchanged.
I know that some people say it makes no difference to fuel consumption and real world tests have been done - but I think that was in quite old cars. Anything modern definitely gets better MPG from E5 - assuming that the E5 is 98 and the E10 is 95.
Terminator X said:
Tyre Smoke said:
It sort of begs the question...
If you can afford to buy an Aston, why is the price of petrol a problem? 10p/litre is £5 or £6 on a tank.
If you can't afford that, you can't afford an Aston.
Savage If you can afford to buy an Aston, why is the price of petrol a problem? 10p/litre is £5 or £6 on a tank.
If you can't afford that, you can't afford an Aston.
TX.
Apologies OP. Wasn't meant to be savage. It was a genuine question.
Driver101 said:
Isn't Esso still ethanol free in England? I find Esso stations expensive. He could be dropping from Esso to Tesco premium.
Just had a look on Esso’s website and I quote “ Although our pumps have E5 labels on them, our Synergy Supreme+ 99 is actually ethanol free (except, due to technical supply reasons, in Devon, Cornwall, North Wales, North England and Scotland)” .......So looks like postcode ethanol free fuel, agree though SO expensive.Gassing Station | General Gassing | Top of Page | What's New | My Stuff