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Ethanol in petrol

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Rooster roo
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Have heard that an EU directive to put more ethanol in petrol to supposedly cut emissions can be damaging to some motorcycles and classic vehicles as reacts with certain metals. Does anyone know anymore on this or experienced any problems using certain petrol suppliers?? Full article on this link http://www.jawaczownersclub.co.uk/technical_advice13.htm Some concerns have been raised recently about the use of ethyl alcohol, or ethanol, in petrol. The product added to petrol may also be called bio-ethanol to link its use with non-fossil derived or renewable buo-fuels. Bio-ethanol has been used at times over the decades, but its recent use is linked to EU directives to increase the proportion of automotive fuel derived from renewable sources, in order to reduce carbon dioxide (CO2) emissions.<?XML:NAMESPACE PREFIX = O /><O:P> </O:P> Ethanol has been blended into petrol in recent years by, among others, Tesco, who use it in their premium 99 octane unleaded petrol blend. Ethanol has a very high octane quality, and so is a valuable blending component for use in the production of high octane unleaded petrol. Its use in this application is limited to 5% volume and is acknowledged by a label on the pump according to the Tesco help line, although this may not always be the case. Although the EU is believed to be considering the mandatory use of bio-ethanol in petrol in the future, at present it is to be hoped that classic vehicle owners would not encounter the blended product without some form of pump marking. If any owners have concerns over using petrol containing 5% ethanol, it would be useful to check fuel before purchase by inspecting pump labels.<O:P> </O:P> Concerns expressed have centred on possible water contamination, degradation of plastic and rubber seals and possible negative effects on foams used in racing tanks to prevent fuel fires and explosions. The position on these issues is not straightforward and is still being investigated in order to establish an accurate understanding. Also, as the proportion of ethanol in the blend is increased, so any difficulties are more likely to become apparent.<O:P> </O:P> Although the 5% ethanol blend can give higher octane quality, volatility is also likely to be higher for this blend of fuel. Some owners are already troubled by driving problems associated with high volatility (vapour lock, fuel starvation, bad hot starting etc. in hot weather), so using a 5% ethanol blend could make such problems worse.<O:P> </O:P>

Have heard that an EU directive to put more ethanol in petrol to supposedly cut emissions  can be damaging to some motorcycles and classic vehicles as reacts with certain metals. Does anyone know anymore on this or experienced any problems using certain petrol suppliers?? 
Full article on this link http://www.jawaczownersclub.co.uk/technical_advice13.htm
 
Some concerns have been raised recently about the use of ethyl alcohol, or ethanol, in petrol.  The product added to petrol may also be called bio-ethanol to link its use with non-fossil derived or renewable buo-fuels.  Bio-ethanol has been used at times over the decades, but its recent use is linked to EU directives to increase the proportion of automotive fuel derived from renewable sources, in order to reduce carbon dioxide (CO2) emissions.<?XML:NAMESPACE PREFIX = O /><O:P> </O:P>
Ethanol has been blended into petrol in recent years by, among others, Tesco, who use it in their premium 99 octane unleaded petrol blend.  Ethanol has a very high octane quality, and so is a valuable blending component for use in the production of high octane unleaded petrol.  Its use in this application is limited to 5% volume and is acknowledged by a label on the pump according to the Tesco help line, although this may not always be the case.  Although the EU is believed to be considering the mandatory use of bio-ethanol in petrol in the future, at present it is to be hoped that classic vehicle owners would not encounter the blended product without some form of pump marking.  If any owners have concerns over using petrol containing 5% ethanol, it would be useful to check fuel before purchase by inspecting pump labels.<O:P> </O:P>
Concerns expressed have centred on possible water contamination, degradation of plastic and rubber seals and possible negative effects on foams used in racing tanks to prevent fuel fires and explosions.  The position on these issues is not straightforward and is still being investigated in order to establish an accurate understanding.  Also, as the proportion of ethanol in the blend is increased, so any difficulties are more likely to become apparent.<O:P> </O:P>
Although the 5% ethanol blend can give higher octane quality, volatility is also likely to be higher for this blend of fuel.  Some owners are already troubled by driving problems associated with high volatility (vapour lock, fuel starvation, bad hot starting etc. in hot weather), so using a 5% ethanol blend could make such problems worse.<O:P> </O:P>

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