E10 Ethanol Fuel - The Definitive Answer (QPV/GT/GC)

rs48635

rs48635

Member
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3,181
seems E10 is suitable for Alfa 8C 4.7 so must be good for majority of cars here too>?
  1. Fiat Chrysler Automobiles (FCA Group)
    Alfa Romeo:
  1. E10 petrol is cleared for use in all new Alfa Romeo models with petrol engines produced from 1st January 2011.
    In addition, E10 petrol is cleared for use in the following Alfa Romeo models with petrol engines:
  • MiTo (all engines)
  • Giulietta (all engines)
  • 159: 1.8 16V, 1.8 TBi 16V, 3.2 JTS V6
  • Brera: 1.8 TBi 16V, 3.2 JTS V6
  • Spider: 1.8 TBi 16V, 3.2 JTS V6
  • 8C: 4.7 32V
 
conaero

conaero

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34,626
Right we have had loads of customers asking the same.

Our advice is to NOT use E10 and only used Super with no Ethanol content.

Several customers have reported lazy cars, noticeable lower MPG and noisy engines.
 
Zep

Zep

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9,229
conaero said:
Right we have had loads of customers asking the same.

Our advice is to NOT use E10 and only used Super with no Ethanol content.

Several customers have reported lazy cars, noticeable lower MPG and noisy engines.
Click to expand...

I’ve never had an issue with it when using it in Europe, but I think there are two points here.

Is it safe to use: the factory says yes

Does it give best performance: no, it probably doesn’t.
 
B

bigbob

Member
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8,965
conaero said:
Right we have had loads of customers asking the same.

Our advice is to NOT use E10 and only used Super with no Ethanol content.

Several customers have reported lazy cars, noticeable lower MPG and noisy engines.
Click to expand...
Agree with this. I'm using E10 in my daily drivers (all euro 6) and E5 in my two older nice cars and the sit on mowers. A groundsman I know has said that all his stuff - strimmers, blowers, mowers etc - are failing on E10. There is a big can of worms here.
 
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drellis

drellis

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Messages
801
I'm now putting super 98/99 Ron in my petrol cars, qpv , cayenne turbo , and e39 525.
I cant I can't tell the difference in the qp or cayenne, but in the e39 at decent cruising speeds it's reading closer to 40mpg whereas on cheap fuel it would be closer to 30mpg ( its that old it has the moving needles) . No idea why as would have thought the car tech too old to adjust, but hey ho the super isn't even a false economy
 
Zep

Zep

Moderator
Messages
9,229
drellis said:
I'm now putting super 98/99 Ron in my petrol cars, qpv , cayenne turbo , and e39 525.
I cant I can't tell the difference in the qp or cayenne, but in the e39 at decent cruising speeds it's reading closer to 40mpg whereas on cheap fuel it would be closer to 30mpg ( its that old it has the moving needles) . No idea why as would have thought the car tech too old to adjust, but hey ho the super isn't even a false economy
Click to expand...

That’s interesting, a really big drop off. Was it actually doing 10 mpg less, or just showing it on the dash? A 25% drop in economy for a 3% reduction in energy density is a pretty adverse reaction (adverse reactions to E10 aren’t that uncommon, it’s just it’s usually in the owners :D)

I have noticed a very slight drop off in economy in my daily (2ish mpg), but no difference in performance. I am putting super in my Maser too, but not because I think it will damage it.
 
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zagatoes30

zagatoes30

Member
Messages
20,901
E10 has been a bit slow coming here but it's stating to show up, I will be using Super in the older cars but will check out the RR & BMW (not that I really care about that one)

The only other E numbers I keep an eye on are these although personally I don't mind when they add the Es

90686

90687
 
drellis

drellis

Member
Messages
801
Zep said:
That’s interesting, a really big drop off. Was it actually doing 10 mpg less, or just showing it on the dash? A 25% drop in economy for a 3% reduction in energy density is a pretty adverse reaction (adverse reactions to E10 aren’t that uncommon, it’s just it’s usually in the owners :D)

I have noticed a very slight drop off in economy in my daily (2ish mpg), but no difference in performance. I am putting super in my Maser too, but not because I think it will damage it.
Click to expand...
Hi sorry I've not tried e10 as happy to pay the extra for no hassle and use super. Up until now I've always put 95 Ron in whatever car i had as never believed 98/99 Ron made any difference
It just shocked me that the only car that seems to notice a difference when running 95 e5 vs 98/99 e5 is a 2002 bmw.
Your right the needle gauges are probably not the most accurate, but it definitely uses less fuel at same cruising speed. Probably in the qp or cayenne turbo I've often got my foot in the floor so maybe that makes the difference.
Anyway sticking with super for all unless at a motorway services
 
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