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of coures all petrol goes off but I am sorry the quality of fuel is not what it used to be in this regardStunned Monkey wrote:Ethanol is alcohol, a lovely solvent so any gunk would have been caused by it shifting gunk from elsewhere in the system. Brand new carb idel jet blocked by white deposits, Petrol is a very efficient solvent, I just think this particular solvent has more adverse effects on older cars than it's supposed benifits
Ethanol has a lower heating value, but its "octane" rating is much higher. Tesco 99 ron is achieved through the use of Ethanol.
Yes it absorbs water but you're talking less than 5% of less than 5% of the contents of your tank.(assuming a 5% blend) and it shouldn't separate out.
Yes it migh only be 5%but it sinks to the bottom of the tank so when you start up you get 100% water
It can cause problem swith old rubber seals.
Yes it rotts them away
All petrol "goes off" over time - I've cleaned out enough DeLorean tanks that've been laid up for decades!
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Stunned Monkey wrote:any truly advantageous ingredient would surely be employed by the oil companies and marketed as being "better"?
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Stunned Monkey wrote:Water does not separate out of ethanol in fuel any more than water falls to the bottom of a bottle of vodka.
Ethanol causes older style rubber seals to expand and soften. it does not rot them away to nothing. Those that do no mechanical work (eg injector seals) versus those that do (pressure regulator) should last a very long time.
I would be very careful to check the credentials of any fuel additives. The manufacturer claims are often over-hyped and any truly advantageous ingredient would surely be employed by the oil companies and marketed as being "better"?
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Tim Moores wrote:Lifted the following statements from
http://forum.onlineconversion.com/archi ... t-233.html
Gasoline has a BTU rating of 18,676 BTUs/lb, whereas ethanol is 38% less @ 11,585 BTUs/lb and per gallon ethanol is 34% less
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