From: Paul A. Thomas (bluewhale@jaxkneppers.com)
Date: Mon Dec 22 2003 - 20:32:46 PST
I would like to add a question to Lances:
My REO's engine probably was rebuilt at some point but is still a straight
6, gas fueled 127 HP engine. Based on ownership and condition I assume
hardened valves ( seats? ) were never installed. The engine runs... what
damage would I risk by NOT using a lead additive in the fuel? I'm curious
as to whether the valves and seats, which would have to be replaced anyway
with hardened units, would be the only things damaged by running it so?
Would the only ( if applicable ) performance hit be less power than if I
were to add the lead?
Thanks
Paul
MVPA #24986
'53 REO M35 Fire Conversion
'53 Atomic Energy Commision Chevy 3/4 Ton
www.paulathomas.com/images
*********************************************************8
At 07:46 PM 12/22/2003, you wrote:
> I've got a question for our knowledgeable experts on internal
>combustion engines. All WWII and most M-series engines prior to the
>1980's were made to be run on leaded gas. Since the late-80's leaded
>gas has ceased to exist at the corner pumps.
>
> I have been told by local MV members that running
> unleaded gas in older
>engines causes serious damage to the valves, such as increased deposits,
>excessive seat wear, and overheated valves. Thus I have been told to
>purchase cans of Lead Substitute and add it to the tank each fill up.
>
> My question is: Just how serious of a problem is
> unleaded gas to our
>older engines ? And how much lead additive should be mixed with 20 to
>25 gallons of unleaded fuel ?
>
>LANCE MVPA 22125
>
>
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