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E10 Ethanol Blend Petrol On The Way


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#1 JMC

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Posted 03 October 2018 - 05:36 pm

Could be worrying times ahead with this new shite !

With older bikes we may have to travel some distance to get "proper" petrol as the bigger garages will be the only ones stocking it.

 

 

WILL ETHANOL DAMAGE MY VEHICLE OR AFFECT ITS PERFORMANCE?

Most metal components in fuel systems will corrode or rust in the presence of water. Ethanol increases petrol's ability to absorb water without separating. Therefore, ethanol-blended petrol can ‘hold’ more water and carry this through the engine. The greater the concentration of ethanol the greater the ability to ‘hold’ water.

Several studies have examined the effect of E10 on fuel tanks and fuel system components and have concluded that ethanol up to 10% does not increase corrosion in normal, everyday operation.

Ethanol blends may have a deteriorating effect on the rubber components of an engine. Other additives, such as benzene, may also have an effect.

In older models, deposits in fuel tanks and fuel lines are occasionally loosened by E10, and the fuel filter may become clogged with this residue. This is remedied by a fuel filter change. If very ethanol-rich fuel is used, this may cause an engine to stall.

The use of E10 petrol in vehicles that are E5 compatible may also result in material compatibility problems within the fuel system.

 

REASONS WHY ETHANOL BLENDED PETROL IS NOT RECOMMENDED FOR USE IN SOME OLDER VEHICLES

Introduction

The following information outlines the key reasons why vehicle manufacturers do not recommend the use of any ethanol/petrol blended fuels in vehicles made before 1986. This information is also applicable to post-1986 vehicles listed as unsuitable to use ethanol blended petrol.

Ethanol has a number of important chemical and physical properties that need to be considered in a vehicle's design.

Carburettor Equipped Engines

Vehicles made before 1986 vehicles were predominantly equipped with carburettors and steel fuel tanks.

The use of ethanol blended petrol in engines impacts the air/fuel ratio because of the additional oxygen molecules within the ethanol's chemical structure.

Vehicles with carburettor fuel systems may experience hot fuel handling concerns. This is because the vapour pressure of fuel with ethanol will be greater (if the base fuel is not chemically adjusted) and probability of vapour lock or hot restartability problems will be increased.

As a solvent, ethanol attacks both the metallic and rubber based fuels lines, and other fuel system components.

Ethanol also has an affinity to water that can result in corrosion of fuel tanks and fuel lines. Rust resulting from this corrosion can ultimately block the fuel supply rendering the engine inoperable. Water in the fuel system can also result in the engine hesitating and running roughly.

Fuel Injected Engines

In addition to the issues mentioned above for carburettor equipped engines, the use of ethanol blended petrol in fuel injection systems will result in early deterioration of components such as injector seals, delivery pipes, and fuel pump and regulator.

Mechanical fuel injection systems and earlier electronic systems may not be able to fully compensate for the lean-out effect of ethanol blended petrol, resulting in hesitation or flat-spots during acceleration.

Difficulty in starting and engine hesitation after cold start can also result.

Exhaust And Evaporative Emission Levels

Lean-out resulting from the oxygenating effect of ethanol in the fuel may affect exhaust emissions.

Of more concern is that fuel containing ethanol can increase permeation emissions from fuel system components, particularly those that have aged for nearly 20 years. Therefore the increased vapour pressure of fuel with ethanol (if the base fuel is not chemically adjusted at the refining stage) will lead to increased evaporative emissions.

 

A few links to read about it : 

https://www.express....ible-check-fuel

 

https://www.acea.be/...MPATIBILITY.pdf

 

 

 

 



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#2 TKH

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Posted 03 October 2018 - 05:45 pm

Thought we already had ethanol mixed in petrol?


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#3 JMC

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Posted 03 October 2018 - 05:59 pm

Thought we already had ethanol mixed in petrol?

 

We do it's called E5, but the new one is E10 with more ethanol so will make a right balls of older carbed vehicles



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#4 trevini

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Posted 03 October 2018 - 09:13 pm

Plus anything from early to mid 2000s with a plastic tank will have issues with the fuel tanks swelling due to the ethanol. Moto Guzzi, Aprilia and Triumphs spring to mind, but I'm sure there are others.


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#5 TKH

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Posted 04 October 2018 - 11:31 am

Following one of your links, I got this excerpt: 

 

The European Fuel Quality Directive (1) requires that countries of the European Union that introduce E10 petrol must ensure that sufficient volumes of today’s petrol (sometimes described as E5) are available for vehicles that are not compatible with the use of E10 petrol.


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#6 JMC

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Posted 04 October 2018 - 03:58 pm

Following one of your links, I got this excerpt: 

 

The European Fuel Quality Directive (1) requires that countries of the European Union that introduce E10 petrol must ensure that sufficient volumes of today’s petrol (sometimes described as E5) are available for vehicles that are not compatible with the use of E10 petrol.

 

Yep but in a few years you will see garages stop selling it because of low sales, so if your nearest garage to buy E5 is 20 miles away (maybe in 10+ years time) will they eventually force us into submission ?



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#7 TKH

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Posted 04 October 2018 - 05:34 pm

 

Yep but in a few years you will see garages stop selling it because of low sales, so if your nearest garage to buy E5 is 20 miles away (maybe in 10+ years time) will they eventually force us into submission ?

 

probably go the way of leaded fuel.


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#8 Favs

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Posted 04 October 2018 - 06:15 pm

2017 - E10 was the best selling petrol type in France


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#9 TKH

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Posted 05 October 2018 - 09:47 am

2017 - E10 was the best selling petrol type in France

 

Sales of unleaded SP95-E10 accounted for 38.5% of petrol sales in France in September, compared with 36.8% for SP95 and 23.6% for SP98. Over the first nine months of 2017, SP95-E10 was also ahead with a share of 38.2% versus 37.5% for SP95.10 Nov 2017

 

 

Some links I checked show e10 as being cheaper so maybe part of the reason.

I've not ridden in France for a long while so can't comment on prices personally.


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