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In California, they used MTBE as an oxygenator, prior to the widespread use o=
f ethanol. Now I believe it has been replaced with ethanol across the board.=
One hears a lot of complaints, but I haven=E2=80=99t had any real problems w=
ith 10% ethanol fuel in my MG. My muscle car, with an advertised 10.5:1 comp=
ression ratio V8, wasn=E2=80=99t very happy with 91 octane CA blend, but it r=
an with slightly retarded timing.
Sent from my iPad
> On Oct 7, 2019, at 5:46 AM, Richard Lindsay via Mgs <mgs@autox.team.net> w=
rote:
>=20
> Hello friends,
> Straight ethanol has an equivalent octane rating of 113, so mixing it w=
ith petrol increases the mixture's octane value. Of course, the quoted value=
on the pump already takes this into account. Beyond that gem of useless kno=
wledge, I'm close to lost.
> Petrol is a mixture of hydrocarbons. We all know that. And Wikipedia ca=
n probably list them all in volume fraction order. But what is added today t=
o increase the 87 octane value, other than ethanol? It used to be TEL, or te=
traethyllead, but those days are long gone. The skeptical and distrusting sc=
ientist in me wants to believe that petrol manufacturers are using the ethan=
ol content to elevate the effective octane rating thereby saving the other o=
ctane boosting stuff, whatever it is.
>=20
> Rick
>=20
>=20
>> On Mon, Oct 7, 2019, 3:11 AM PaulHunt73 via Mgs <mgs@autox.team.net> wrot=
e:
>> Fortunately the UK still has 5% max ethanol in both standard and high oct=
anes. There is 'moral' pressure from some quarters on the Government to inc=
rease it to 10% max but suppliers can meet their legal requirements purely w=
ith bio diesel, and don't want to be the first to go to 10% and get bad publ=
icity from complaints. If the move against diesel gathers pace that may for=
ce their hands.
>> =20
>> The main problem with fuel hoses and everything else rubber here is the q=
uality of the rubber itself. I've always (30 years) run the roadster on hig=
h octane but the V8 (24 years) always on standard which has had ethanol at 5=
% max for 20 years now. While 98 octane may not have contained ethanol orig=
inally, suppliers tended to be cagey when asked directly, and others indicat=
ed that it varied according to where in the UK you bought it. Four years ag=
o I decided to replace the V8 pump hoses as the braiding was crumbling when i=
t came to me so they were probably original - but as far as the rubber goes t=
he old ones were in perfect condition. I even slit a piece lengthwise and o=
pened it out but there wasn't a trace of cracking. When I first got the V8 i=
t didn't have any carb overflow hoses so I installed them, and they have had=
to be replaced since from severe cracking - and they don't even carry liqui=
d fuel, only vapour. I fitted non-braided so I can keep an eye on the exter=
nal condition at least, but I have no doubt they won't last anywhere near as=
long as the originals.
>> =20
>> If standard here goes up to 10% - fortunately pumps are now required to b=
e labelled clearly on the pump as well as the nozzle itself - I'll run the V=
8 on high octane as well, as that has been designated 'petrol protection gra=
de' for older vehicles for the foreseeable future.
>> =20
>> PaulH.
>> ----- Original Message -----
>> Last week 95 octane fuel has to be 10% bio-ethanol, which makes even post=
-modern cars vulnerable for this nasty fuel additive.
>> So I=E2=80=99ll change the type of fuel for my mopeds to a special one. T=
he BGT will get the 98 octane fuel, which contains 5% bio-ethanol.
>>=20
>> _______________________________________________
>>=20
>> Mgs@autox.team.net
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>=20
>> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>>=20
>> Unsubscribe: http://autox.team.net/mailman/options/mgs/richardolindsay@gm=
ail.com
> _______________________________________________
>=20
> Mgs@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>=20
> Unsubscribe: http://autox.team.net/mailman/options/mgs/mvheim@sonic.net
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">In California, they used MTBE as an oxygena=
tor, prior to the widespread use of ethanol. Now I believe it has been repla=
ced with ethanol across the board.<div><br></div><div>One hears a lot of com=
plaints, but I haven=E2=80=99t had any real problems with 10% ethanol fuel i=
n my MG. My muscle car, with an advertised 10.5:1 compression ratio V8, wasn=
=E2=80=99t very happy with 91 octane CA blend, but it ran with slightly reta=
rded timing.<br><br><div id=3D"AppleMailSignature" dir=3D"ltr">Sent from my i=
Pad</div><div dir=3D"ltr"><br>On Oct 7, 2019, at 5:46 AM, Richard Lindsay vi=
a Mgs <<a href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.net</a>> w=
rote:<br><br></div><blockquote type=3D"cite"><div dir=3D"ltr"><div dir=3D"au=
to"><div>Hello friends,<div dir=3D"auto"> Straight ethanol has a=
n equivalent octane rating of 113, so mixing it with petrol increases the mi=
xture's octane value. Of course, the quoted value on the pump already takes t=
his into account. Beyond that gem of useless knowledge, I'm close to lost.</=
div><div dir=3D"auto"> Petrol is a mixture of hydrocarbons. We a=
ll know that. And Wikipedia can probably list them all in volume fraction or=
der. But what is added today to increase the 87 octane value, other than eth=
anol? It used to be TEL, or tetraethyllead, but those days are long gone. Th=
e skeptical and distrusting scientist in me wants to believe that petrol man=
ufacturers are using the ethanol content to elevate the effective octane rat=
ing thereby saving the other octane boosting stuff, whatever it is.</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto">Rick</div><br><br><div class=3D"g=
mail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Oct 7, 2019, 3:11 A=
M PaulHunt73 via Mgs <<a href=3D"mailto:mgs@autox.team.net";>mgs@autox.tea=
m.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div bgcolor=3D"#ffffff">
<div><font size=3D"2">Fortunately the UK still has 5% max ethanol in bo=
th=20
standard and high octanes. There is 'moral' pressure from some quarter=
s on=20
the Government to increase it to 10% max but suppliers can meet their legal=20=
requirements purely with bio diesel, and don't want to be the first to g=
o=20
to 10% and get bad publicity from complaints. If the move against dies=
el=20
gathers pace that may force their hands.</font></div>
<div><font size=3D"2"></font> </div>
<div><font size=3D"2">The main problem with fuel hoses and everything else r=
ubber=20
here is the quality of the rubber itself. </font><font size=3D"2">I've=
always=20
(30 years) run the roadster on high octane but the V8 (24 years) always on=20=
standard which has had ethanol at 5% max for 20 years now. While 9=
8=20
octane may not have contained ethanol originally, suppliers tended to be cag=
ey=20
when asked directly, and others indicated that it varied according to where i=
n=20
the UK you bought it. Four years ago I decided to replace the V8 pump=20=
hoses as the braiding was crumbling when it came to me so they were probably=
=20
original - but as far as the rubber goes the old ones were in perf=
ect=20
condition. I even slit a piece lengthwise and opened it out but there=20=
wasn't a trace of cracking. When I first got the V8 it didn't have any=
=20
carb overflow hoses so I installed them, and they have had to be replaced si=
nce=20
from severe cracking - and they don't even carry liquid fuel, only vapour.&n=
bsp;=20
I fitted non-braided so I can keep an eye on the external condition at least=
,=20
but I have no doubt they won't last anywhere near as long as the=20
originals.</font></div>
<div><font size=3D"2"></font> </div>
<div><font size=3D"2">If standard here goes up to 10% - fortunately pumps ar=
e now=20
required to be labelled clearly on the pump as well as the nozzle itself - I=
'll=20
run the V8 on high octane as well, as that has been designated 'petrol=20
protection grade' for older vehicles for the foreseeable future.</font></div=
>
<div><font size=3D"2"></font> </div>
<div><font size=3D"2">PaulH.</font></div>
<blockquote style=3D"BORDER-LEFT:#000000 2px solid;PADDING-LEFT:5px;PADDING-=
RIGHT:0px;MARGIN-LEFT:5px;MARGIN-RIGHT:0px">
<div style=3D"FONT:10pt arial">----- Original Message ----- </div>
<div style=3D"FONT:10pt arial;BACKGROUND:#e4e4e4"><span style=3D"FONT-FAMI=
LY:'calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Last=20
week 95 octane fuel has to be 10% bio-ethanol, which makes even post-moder=
n=20
cars vulnerable for this nasty fuel additive.</span></div>
<div class=3D"gmail_extra">
<div class=3D"gmail_quote">
<blockquote style=3D"BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;P=
ADDING-LEFT:1ex">
<div>
<div>
<p><span style=3D"FONT-FAMILY:'calibri','sans-serif';COLOR:#1f497d;FONT-=
SIZE:11pt">So=20
I=E2=80=99ll change the type of fuel for my mopeds to a special one. The=
BGT will=20
get the 98 octane fuel, which contains 5%=20
bio-ethanol.</span></p></div></div></blockquote></div></div></blockquote><=
/div>
_______________________________________________<br>
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x.team.net/mailman/options/mgs/richardolindsay@gmail.com</a><br>
</blockquote></div></div></div>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><span>________=
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