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Re: Unleaded gas; Chevron's view

To: "Triumph mailing list" <triumphs@Autox.Team.Net>, "Andy" <adixon@loudoun.com>
Subject: Re: Unleaded gas; Chevron's view
From: "George P. Richardson" <gprtech@frontiernet.net>
Date: Fri, 12 Dec 1997 14:13:05 -0500charset="iso-8859-1"
I'm impressed that Chevron responded at all.

George Richardson
'57 TR3, TS15559L
(getting ready to paint - and now on the web!)
http://www.merlingroupinc.com/tr3.htm
-----Original Message-----
From: Andy <adixon@loudoun.com>
To: triumphs@autox.team.net <triumphs@autox.team.net>
Date: Friday, December 12, 1997 1:48 PM
Subject: Unleaded gas; Chevron's view


>In response to a recent thread, I wrote to the customer service departments
>of several gasoline companies.  So far only Chevron (No financial interest,
>Yadda Yadda Yadda) has responded.  I guess unleaded is OK under the
>"right" conditions.  I'm pessimistic so I guess I'll go for the hardened
seats
>just to be sure.
>
>Here's their response:-
>
>"I am not aware of any inherent chemical properties of current unleaded
>gasoline that would prevent valve seat sink under the "right" service
>conditions in cars with valve seats that are not hardened. Nor do I
>believe that many unleaded gasolines contain an additive to compensate
>for the lack of lead.  Chevron's unleaded gasolines don't.  However, it
>is Chevron's belief that using unleaded gasoline in older cars with
>valve seats that are not hardened does not present a problem for most
>types of service.  This is should be particularly true for the light
>service most antique sports cars see.  Valve seat sink only becomes a
>risk at higher than normal engine temperatures generated by operation at
>sustained high speeds and/or loads.  Please see our technical bulletin
>on the subject at www.chevron.com/chevron_root/prodserv/index.html.
>
>Happy driving."
>
>Do with it as you will
>
>Andy
>


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