From: Steve & Jeanne Keith (cckw@attbi.com)
Date: Mon Mar 04 2002 - 17:05:40 PST
Octane enhancing lead was introduced in 1921 I believe and
I think it was a GM scientist/engineer in the US that discovered it.
Steve AKA Dr Deuce
----- Original Message -----
From: "Gerry Davison" <gerry@marlab.dk>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, March 04, 2002 2:45 PM
Subject: [MV] Sv: [MV] Leased versus unleaded fuel.
> Hi Cor
>
> Yes, the lead definitely has a purpose, it allows the octane number to be
> increased without "knocking". But most military vehicles of the early 40's
> were designed for 70 Octane, which was the best you could find in general
> use in 1940. The use of lead was a German invention to allow them to
> increase the octane rating of fuel for their fighters, and it indeed
> worked - for a while until the secret was discovered by the allies. So for
> higher octane engines like those in modern cars, there is a definite
> advantage to performance in using leaded contra unleaded petrol. In
engines
> from the early 40's though, it really doesn't matter at all.
>
> Regards
> Gerry
>
>
>
> ----- Oprindelig meddelelse -----
> Fra: "Cor Streutjens" <cstreutjens@hotmail.com>
> Til: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sendt: 4. marts 2002 19:43
> Emne: [MV] Leased versus unleaded fuel.
>
>
> >
> > List,
> >
> > Just read the message below. Point is that one of the dealers of
military
> > vehicles I know runs his Nekaf M38A1s, Willys MBs and Hotchkisses (this
is
> > the Netherlands) on unleaded fuel. No hardened valves or valve seats in
> his
> > engines he said. He told me he has done so for over 20 years and has
never
> > experienced any damage to the engines.
> > I am new to the art of keeping a mil veh om the road and am willing to
> > listen to the fellow who has more knowledge of the subject than I do.
This
> > includes (nearly?) all fellow list members by the way for which I
express
> > thanks. Personally I believe that the lead in the fuel definitely has
its
> > function and cannot be left out without consequences. What must I do?
> > Another subject is engine oil. Can I use mineral oil with dopes like
25W40
> > in my 1956 Nekaf M38A1 or is it better to use the 2 kinds of oil without
> > dopes for summer and winter like the 1963 manual says?
> >
> > Appreciate all help.
> >
> >
> > Thanks,
> >
> > Cor
> > 1956 M38A1
> >
> > >From: "Richard Lathrop" <lathrrs@snip.net>
> > >To: <mil-veh@mil-veh.org> (Military Vehicles Mailing List)
> > >Subject: Re: [MV] Introduction
> > >Date: Mon, 4 Mar 2002 10:37:26 -0500
> > >
> > >Gerry,
> > >Welcome back!
> > >
> > >That has been a much discussed subject on the Dodge Power Wagon Forum
in
> > >the past as well. I know that the lead additive provided lubrication
for
> > >the valves.
> > >
> > >I am sure there are others (Cougarjack comes to mind) that can give us
a
> > >very detailed technical explanation of lead additives and its effect on
> > >flathead engines.
> > >
> > >This thread would apply to most other flathead engines as well.
> > >
> > >Rick
> > >
> > >
> > >
> > >
> > >---------- Original Message ----------------------------------
> > >From: "Gordon.W.I. McMillan" <gwim2@student.open.ac.uk>
> > >Date: Mon, 04 Mar 2002 15:33:31 +0000
> > >
> > > >We remember you Gerry, we have long memories here..... 8-)
> > > >
> > > >Did Betty ever suffer from running on unleaded ? Someone asked
> recently
> > > >on the WW2 Dodge Forum;
> > > >
> > > >http://disc.server.com/Indices/118969.html
> > > >
> > > > if you could run one of those Chrysler flatheads long term on
unleaded
> > > >with no problems. I said you should be able to since they had
hardened
> > > >exhaust valve seats but I wasn't sure, and I know Betty did more
milage
> > >on
> > > >unleaded than most.
> > > >
> > > >Gordon
> > > >
> > > >
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> >
> >
> >
> >
> > Drs. C. Streutjens
> > Technisch Applicatie Consultant SAP
> > Pinkroccade Industrious
> > Tel 06 2952 4968
> > c.streutjens@ind.pinkroccade.nl
> > cstreutjens@hotmail.com
> >
> >
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>
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