Re: SER1 Unleaded petrol?

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From: charlie myres
Subject: Re: SER1 Unleaded petrol?
Date: 05:01 on 20 Dec 2005

Hello Paco,
I have found this in some old "Practical Classics"
magazines.

Using phosphorous based lead-substitute additives such
as; STP Lead substitute; Associated Octel Valvemaster
may help. Wynn's Lubrivalve is mentioned and the
spring issue 1999, says Red Line lead substitute and
Superblend Zero Lead have passed an independent test
in which less than 0.3mm of valve seat recession was
found. Tin based products were found to be of no use
in preventing valve seat recession.

They also say to change to hardened seats if you do
high mileages, or if the car is driven hard e.g.
towing.

I hope this is of some use to you.

Cheers Charlie


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SER1 Unleaded petrol?
Francesc Serra Graells 14:00 on 19 Dec 2005

Re: SER1 Unleaded petrol?
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=?ISO-8859-1?Q?=22Dirk_R=FCttgers=22?= 19:02 on 20 Dec 2005

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