At 07:37 PM 1/16/98 -0000, Phil Raby wrote:
>Leaded petrol (Gasoline to Yanks) =AD which some older MGs require - is=
being phased out in the UK in 2000. This will have a serious effect on=
classic car owners.
>
>I know that the USA did this some years ago, how are people managing?
Hardened valve guides. Mainly changes to the valve train, as this is the=
main effect, besides the obvious loss of ping-retarding characteristics=
from leaded fuel. I think the exhaust valves are also a different compound=
than standard. I've heard one way of getting around rebuilding the head,=
is simply using Marvel Mystery Oil, or other applicable light oil. This=
will protect the valve train.
>Also, what type of petrol is available in the US now? In England we have=
Four Star (98 Octane leaded), Super Unleaded (98 octane) and Unleaded (95=
Octane). Super Unleaded is required for some performance cars but is not=
readily available anymore because of scares about its benzine content.
>
Gasoline in the southeastern US is available in 87, 89, and either 92 or 91=
octane ratings, but I'm not sure if these numbers are valid for comparison=
with Euro octane numbers. I think we may use RON + ???/2. Basically an=
average of the two standards, while you guys use only one rating. Could=
someone on the list enlighten further?
I am not certain about the benzene concentration in your Super Unleaded, but=
realistically, I would not worry too much. In some of my OSHA(safety and=
health regulatory agency here in US) 40-hour training for environmental=
workers, I remember getting an instrument out and sticking this into the=
gas tank of my MGB. It basically pegged the meter as far as benzene is=
concerned. The concentration of benzene, while quite high, isn't enough to=
cause problems, unless you are a gas station attendant and are exposed to=
fumes for lengthy times(years).
I would imagine the biggest impact to your country might be the expense of=
using gasoline with more additives to raise octane. I imagine this gas=
would be more expensive.
But then I look at the 92 octane premium gas here in Atlanta, GA for=
$1.13/gallon, and I wonder how cheap it really is to make. =20
I think the main reason for cheap gas here is the fact that Atlantans=
combined put over 1,000,000 miles(1.6 Million km) on the roads each day. =
More than any other city in America and possibly the world. Pathetic!
Jay
***********************************************
Jurgen Hartwig, Civil Engineering, Georgia Tech
<paraindent><param>left</param>When you were born you cried =20
and the world rejoiced
Try to live your life so that
when you die you will rejoice
and the world will cry. =20
</paraindent>
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