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Fuel blend
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Fuel blend
After many years with my 23i and experimenting i finally found the best fuel for my car.
I use a 50/50 blend of Shell E10 unleaded and Sainsbury's super-unleaded.
I wondered being German car they set up/tuned the engines for the ethanol as seeing it was mandated back in 2011 to go E10.
(My local Shell is cheaper than Sainsburys E10)
I use a 50/50 blend of Shell E10 unleaded and Sainsbury's super-unleaded.
I wondered being German car they set up/tuned the engines for the ethanol as seeing it was mandated back in 2011 to go E10.
(My local Shell is cheaper than Sainsburys E10)
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- Lifer
- Posts: 8513
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Fuel blend
That would be a problem for me; Sainsbury's is 200 yards away but the nearest shell is 15 miles! I could never get near 50/50
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
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- Member
- Posts: 105
- Joined: Sun Apr 17, 2022 9:46 am
- Location: Royston….ish
Fuel blend
I've only used esso for the last 25+ years and more recently only ever use the E5. As from plenty of media articles... E10 has 10% ethenol (plant based ie: containing water) and a combustion engine was never designed to have water on the inside. And saw an artical recently saying that E10 also has a worse fuel economy than E5 so you'll be visiting the petrol garage more often.
E89 20i SDrive M Sport mineral grey
Golf R-line Atlantic blue
VW Caddy..... Yep.. Its white
Golf R-line Atlantic blue
VW Caddy..... Yep.. Its white
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OnlineMr Tidy
- Legend
- Posts: 23856
- Joined: Wed Jul 02, 2014 12:18 pm
- Location: North West Surrey
Fuel blend
So your 23i will have the N52 engine like my first 2 E86s, E91 and current E90 have and BMW recommended a minimum of 98 RON for all of those whenever possible.
And as my nearest filling station was a Tesco I ran them on Momentum 99 RON, which is what I still use in my MC.
Sainsbury E5 is only 97 RON!
Your Shell may be cheaper than Sainsburys for E10 but Shell, BP, Esso and others add silly money to their E5 prices.
And as my nearest filling station was a Tesco I ran them on Momentum 99 RON, which is what I still use in my MC.
Sainsbury E5 is only 97 RON!
Your Shell may be cheaper than Sainsburys for E10 but Shell, BP, Esso and others add silly money to their E5 prices.
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Fuel blend
Actually my 23i handbook says minimum 93RON.
I find full tank of super unleaded like Shell vpower runs like it's too good for the engine, although it might hit the red line easier..
So i rarely try that. I read it's slower burning fuel, so not much good for normally aspirated.
The mix i find seems to give a more aggressive acceleration.
Best again my MC is Shell unleaded, on super there is more vibration through hand grips.
I find full tank of super unleaded like Shell vpower runs like it's too good for the engine, although it might hit the red line easier..
So i rarely try that. I read it's slower burning fuel, so not much good for normally aspirated.
The mix i find seems to give a more aggressive acceleration.
Best again my MC is Shell unleaded, on super there is more vibration through hand grips.
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- Senior Member
- Posts: 2552
- Joined: Fri May 26, 2017 3:40 pm
- Location: Plymouth
Fuel blend
Your engine draws in damp air every time it rains, its misty etc. You can also get condensation in the bore if conditions are right. The amount of water in refined ethanol is around 5% ish. It burns off instantly just like moisture in the air.Johnny h wrote: ↑Thu Sep 22, 2022 10:05 pm I've only used esso for the last 25+ years and more recently only ever use the E5. As from plenty of media articles... E10 has 10% ethenol (plant based ie: containing water) and a combustion engine was never designed to have water on the inside. And saw an artical recently saying that E10 also has a worse fuel economy than E5 so you'll be visiting the petrol garage more often.
Mark
Plymouth
E89
35i
Carmine Red
Black leather
Plymouth
E89
35i
Carmine Red
Black leather
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- Member
- Posts: 105
- Joined: Sun Apr 17, 2022 9:46 am
- Location: Royston….ish
Fuel blend
Good point well made Mark
E89 20i SDrive M Sport mineral grey
Golf R-line Atlantic blue
VW Caddy..... Yep.. Its white
Golf R-line Atlantic blue
VW Caddy..... Yep.. Its white
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Fuel blend
I think it's 8 gallons of moisture for every gallon of fuel passes through engine.
Problem with ethanol fuels is the longer term storage absorbing moisture, some concerning micro light pilots if they don't use their mogas powered aircraft much.
Problem with ethanol fuels is the longer term storage absorbing moisture, some concerning micro light pilots if they don't use their mogas powered aircraft much.
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Fuel blend
I should think a misfire at any sort of altitude is pretty worrying!
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Fuel blend
Well i had water in fuel a few weeks ago, turned crosswind and engine pretty much gave up, did a dirty dive onto alternate runway.
Normally water can get in through fuel caps, but also tank vents, so ethanol in mogas can absorb water.