You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
The big problem with E10, and something the car companies and Govt wont acknowledge is the far greater demands it puts on your lubricating oil.
The aromatic component of the E10 fuel is extremely tough on oil, and this is exacerbated with direct injected petrol engines which are chronic fuel diluters.
Look at halving the factory recommended oil change intervals if you wish to keep a vehicle for quite a number of years using the ethanol laced brews.
This is based on advice from a professional independent lubricants adviser I deal with in the US.
"How long since you've visited The Good Oil?"
'93 V8 Rossi
'97 to '07. sold.![]()
'01 V8 D2
'06 to 10. written off.
'03 4.6 V8 HSE D2a with Tornado ECM
'10 to '21
'16.5 RRS SDV8
'21 to Infinity and Beyond!
1988 Isuzu Bus. V10 15L NA Diesel
Home is where you park it..
[IMG][/IMG]
I think that the Law makers and Doo Gooders do not care about us.
The car manufacturers and the goverment have their agenda and HERE is the proof
So I think that we have to start saving![]()
Based on the US experience, I doubt it.
Funny thing is some oils cope OK, and in one instance, some 'premium', very exxy ones don't. (although it appears all the direct injected engines suffer)
The oil company involved, who was retailing E10 fuel didn't re-blend their oils to suit the E10, so go figure......
Dont think its just NSW,it has already started in QLD.There is one Caltex in beenleigh that has most of its pumps E10,the others are premium unleaded,and a diesel
I rang Caltex & they said the Govt was pushing this,& they had a few complaints from customers.
So we are the mugs that will be paying for it with higher costs.Oil companys will be happy,one less type of fuel to worry about,
My son has used E10 in his v8 96 dunny dore & it definitely uses around 10% more,as do our workvans although most of them are on LPG.
And the issue ,as said ,of oil breakdown is a major concern,which will also push up serviceing costs& may lead to failures due to people not realising this issue.
And to confuse the issue,isnt there a different diesel around?
Aromatic component????? Ethanol is not an aromatic chemical, and as it is itself an octane booster it would reduce the need for additional aromatic content, which is a common way of increasing octane rating. I suggest if someone is telling you that there is a higher aromatic content in E10 than unleaded, then they do not know what they are talking about. And I would be cautious about advice from a market which draws its feedstock from an almost totally different set of fields.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
John, I've been told that the E10 fuels available in the US have had their aromatics increased and it is negatively affecting oils in the sump compared to as recently as five years ago. This source is someone who's business is oil analysis and works with triboligists and blenders all the time, as well as end users.
He's seeing the results day in, day out in oil tests.
Also, I wouldn't have thought the feedstock would have made any difference to the ethanol derived ?
Aromatic is a term used to describe hydrocarbon (and derivative) molecules containing "benzine rings". These occur naturally in crude oils, but in vastly different proportions. Like branched chain hydrocarbons they increase the octane rating of petrol refined from crude containing them. If the octane rating of the petrol from distillation plus hydrocracking is too low, then it has to be increased by some sort of additive. Historically tetraethyl lead was used, but this is no longer used (except in aviation fuels), so something else has to be used. There are various other compounds that can be used, but because they all need much higher proportions than the lead did, it costs more. What is commonly used is either aromatics derived from crude oil containing them or branched hydrocarbons formed by more complex chemical operations, or ethanol.
The important thing to remember is that E10 is not "ethanol derived" it is a simple mixture of petrol and ethanol. In the Australian context the petrol is probably normally the stuff that comes out of an unleaded pump, perhaps minus a bit of benzol, but I would not be too sure about even that, since the E10 has higher octane rating than unleaded. Australian fuel is mostly refined from Australian and East Asian crude oils, whereas US fuels come from a wide variety of sources, mainly Middle East (which is high in aromatics), domestic, Mexican and Venezuelan. While there will in both cases be the occasional spot cargo from anywhere in the world, generally speaking, there is almost no overlap in the origin of fuel between here and the US. Since fuels are specified by their physical and thermal properties plus octane rating, not their chemical composition (except for banning of things like lead!), and the chemical composition is mainly dependent on their
origin, you need to be very careful about assuming that this sort of result is transferable between the two areas.
To indicate the sort of problems that have arisen from this sort of thing in the past - in WW1 when the US entered the war, one of their first acts was to start supplying aviation fuel to the allies, who were largely relying on fuel from the Middle East. This caused all sorts of engine problems, because the US crude (mostly Texas at that stage) was low in aromatics, and hence lower octane (which was not understood at the time - this is why the research into it started). In the second war, the British had their revenge. To assist the Pacific war effort, Britain supplied aviation fuel from their Middle East fields. Much higher in aromatics than the accustomed fuel for the US aircraft, it dissolved the rubber fuel tank liners they were using.
I hope this has helped understanding, not confused it more! And of course, it is quite possible that ethanol blend fuels are harder on oils than pure hydrocarbon blend fuels (although I would be surprised if at E10 it was more than the variation within pure hydrocarbon fuels), but it won't be because having ethanol in it means it has more aromatics in it.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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