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iam_TJ LifeTime Member
Joined: 10 Apr 2013 Posts: 351 Location: Europe
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Posted: Thu Jun 24, 2021 13:45 Post subject: GDI - 2021 UK Petrol grade switch to E10 95 octane |
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From September 2021 UK is switching from standard unleaded E5 (95 octane + 5% ethanol) to E10 (95 octane + 10% ethanol) which is incompatible with GDI engines pre 2007 according to
E10 Compatibility:
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Mitsubishi
E10 petrol is cleared for use in all models with petrol engines except those equipped with the GDI engine (gasoline direct injection) until 2007 models.
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Recommendation is to switch to E97. Prolonged use of unleaded E10 could cause damage to seals and metal.
RAC says:
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In short, no. As many as 600,000 vehicles on our roads in 2020 aren't compatible with E10 - you can see if your car is compatible with the new fuel by visiting the official E10 online checker.
Drivers are advised to contact car manufacturers with any questions surrounding their specific vehicle. For example, Vauxhall says E10 fuel can be used in all petrol-engine Vauxhall vehicles except models with the 2.2-litre direct-injection petrol engine (code Z22YH) used in Vectra, Signum and Zafira.
As a rule, drivers of cars registered prior to 2002 are advised not to use E10 in their vehicle, as problems have been reported. And as of 2011, all new cars sold in the UK must be E10 compatible.
The RAC understands that if you put E10 fuel in an incompatible car it will still run, but seals, plastics and metals may be damaged over longer periods as a result of bioethanol's corrosive properties.
There have also been reports that E10 is a less stable fuel and that this can make it more difficult to start a vehicle that has not been driven for an extended period. |
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Posted: Thu Jun 24, 2021 13:45 Post subject: Google Ads keep the POCUK free to join! |
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iam_TJ LifeTime Member
Joined: 10 Apr 2013 Posts: 351 Location: Europe
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Posted: Wed Sep 01, 2021 7:36 Post subject: E10 replaced E5 at pumps from 1st September 2021 |
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UK fuel stations now only have E10 Unleaded. The V6 3.5 GDi engine seals, etc., are not compatible with the Ethane content of the fuel so we either have to use a higher octane/lower ethane mix, more expensive, alternative or an additive
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Are there recommendations for a trusted additive (my bet is there may well be poor/fake products on the market to snare the unaware) ? |
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iam_TJ LifeTime Member
Joined: 10 Apr 2013 Posts: 351 Location: Europe
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Posted: Wed Sep 01, 2021 7:49 Post subject: |
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As an example I looked at the Miller Oils EPS Ethanol Protection Fuel Treatment but even its Product Technical Data Sheet only specifically makes claims about anti-corrosion properties but avoids specific mention of protection of seals, for example.
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USER BENEFITS:
Endorsed by the FHBVC to protect against the corrosion effects of ethanol in modern fuels.
Combats the adverse effects of ethanol in fuel (up to E10).
Prevents fuel system corrosion.
Helps protect components.
Carburettor anti-icing formula.
Compatible with catalytic converters. |
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Heinz57nt Newbie
Age: 69 Zodiac: Joined: 16 Nov 2014 Posts: 3 Location: Hampshire
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Posted: Thu Sep 30, 2021 20:53 Post subject: GDI - 2021 UK Petrol grade switch to E10 95 octane |
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E5 petrol is supposed to be available for 5 years. Even during the fuel shortage this week I obtained a tank of top grade from local Shell garage. I have to admit mixing with E10 a few times but needs must. |
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radiomike ******
Joined: 04 Aug 2010 Posts: 1483 Location: North Bucks
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Posted: Fri Oct 08, 2021 10:51 Post subject: Re: GDI - 2021 UK Petrol grade switch to E10 95 octane |
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Heinz57nt wrote: |
E5 petrol is supposed to be available for 5 years. Even during the fuel shortage this week I obtained a tank of top grade from local Shell garage. I have to admit mixing with E10 a few times but needs must. |
IIRC the grey import mk2 GDIs had a different map to the UK ones and were supposed to be run on Super for best results.
I also found this from Mitsubishi New Zealand which contradicts the UK understanding:
https://www.mmnz.co.nz/about/environment/bio-fuels/ |
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radiomike ******
Joined: 04 Aug 2010 Posts: 1483 Location: North Bucks
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Posted: Fri Oct 08, 2021 13:13 Post subject: Re: GDI - 2021 UK Petrol grade switch to E10 95 octane |
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radiomike wrote: |
Heinz57nt wrote: |
E5 petrol is supposed to be available for 5 years. Even during the fuel shortage this week I obtained a tank of top grade from local Shell garage. I have to admit mixing with E10 a few times but needs must. |
IIRC the grey import mk2 GDIs had a different map to the UK mk3 and were supposed to be run on Super for best results.
I also found this from Mitsubishi New Zealand which contradicts the UK understanding:
https://www.mmnz.co.nz/about/environment/bio-fuels/ |
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iam_TJ LifeTime Member
Joined: 10 Apr 2013 Posts: 351 Location: Europe
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Posted: Fri Oct 08, 2021 18:12 Post subject: |
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I should have been clearer in my follow-ups that I was referring specifically to 95 RON unleaded. |
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radiomike ******
Joined: 04 Aug 2010 Posts: 1483 Location: North Bucks
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Posted: Fri Oct 08, 2021 23:58 Post subject: Re: E10 replaced E5 at pumps from 1st September 2021 |
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iam_TJ wrote: |
UK fuel stations now only have E10 Unleaded. The V6 3.5 GDi engine seals, etc., are not compatible with the Ethane content of the fuel so we either have to use a higher octane/lower ethane mix, more expensive, alternative or an additive
.
Are there recommendations for a trusted additive (my bet is there may well be poor/fake products on the market to snare the unaware) ? |
Puzzled by your use of Ethane, Ethane is a alkane gas while Ethanol is an alcohol liquid. |
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iam_TJ LifeTime Member
Joined: 10 Apr 2013 Posts: 351 Location: Europe
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Posted: Sun Oct 10, 2021 4:06 Post subject: Re: E10 replaced E5 at pumps from 1st September 2021 |
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radiomike wrote: |
Puzzled by your use of Ethane, Ethane is a alkane gas while Ethanol is an alcohol liquid. |
Ah, the joys of predictive/destructive text input! |
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trispaj Newbie
Age: 42 Zodiac: Joined: 05 Jun 2018 Posts: 7 Location: Devon
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Posted: Sat Oct 30, 2021 19:03 Post subject: |
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Any feedback from the 3.0 & 3.5L V6 users on E10 yet? |
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ButtsBrow Newbie
Joined: 15 Sep 2020 Posts: 2 Location: East Sussex
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Posted: Thu Jul 20, 2023 15:00 Post subject: |
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The advice appears fairly straightforward for the GDI engine DO NOT USE E10.
I have been caught out where only E10 is available, and it is probably the age of the vehicle, but the filler pipe and large hose to the fuel tank gave up in the last cold spell and started to leak. It is probably due to dirt tapped under the wheel arch trim. All now replaced this summer. I did wonder if the Ethanol which attracts water was enough to cause freezing and ice crystals which formed on the filler pipe / hose junction. |
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