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Re: [Mgs] OIL

To: "Paul Osborne" <paul@ece.rochester.edu>, "Barney Gaylord"
Subject: Re: [Mgs] OIL
From: "riverside" <riverside@southslope.net>
Date: Mon, 30 Aug 2010 10:47:01 -0500
ZDDP has no impact on valve seat recession.   It is effective
in slip and slide  (cam and lifter) movies only.

art d
----- Original Message ----- 
From: "Barrie Robinson" <barrie@look.ca>
To: "Paul Osborne" <paul@ece.rochester.edu>; "Barney Gaylord" 
<barneymg@mgaguru.com>
Cc: <mgs@autox.team.net>
Sent: Sunday, August 29, 2010 12:03 PM
Subject: Re: [Mgs] OIL


>I was paid by Shell to test out their oil on my brand newly restored Austin 
>Healey.  It was meticulously  measured for the dreaded valve seat recession 
>and I put a lot of  miles on.  After this Shell measured again (they made a 
>special tool to fit the engine) - and voila!   - no signs of wear!  This 
>during a period when some companies were pushing additives
>
>
> At 10:54 AM 8/28/2010, Paul Osborne wrote:
>>I'm with Barney,  why all of these exotic oils and lube mixes??? Have been 
>>using NAPA 20-50 too and with 100,000   +    and in 2 cars ,  regular 
>>changes all is just fine.  Guess there is a need to spend $$  .
>>paul
>>
>>
>>>Chuckle.  Something wrong with "the average LBC"?  My MGA fairly often 
>>>does 500 miles in a single day.  385,000 miles and counting. So far I do 
>>>not worry about ZDDP, except during a new cam break in period.  I run 
>>>NAPA 20W50 in summer and 10W40 in winter.  Current engine has 75,000 
>>>miles, going strong, never had the bottom end apart.
>>>
>>>Barney Gaylord
>>>1958 MGA with an attitude
>>>http://MGAguru.com
>>>
>>>
>>>At 11:23 PM 8/27/2010 -0500, "Ron  S" (<iverside> wrote:
>>>>The street version does not contain zddp. VR-1 does contain zddp and  is 
>>>>labeled for off-road use only but does not contain the high milage 
>>>>additives of the street version.  It is meant to be changed after every 
>>>>race, or about every five hundred or so miles. This is about the milage 
>>>>the average LBC `weekend tourer' does in a driving season in a moderate 
>>>>climate area.
>>>>....
>>___
>>
>>--
>>Paul Osborne
>>University of Rochester
>>Engineering & Technical Services
>>Department of Electrical and Computer Engineering
>>201 Hopeman Bldg River Campus
>>Rochester, New York 14627
>>585-275-5226
>>paul@ece.rochester.edu
>>_______________________________________________
>>
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>
> Regards
>
> Barrie
> barrie@look.ca
> 705--721-9060 _______________________________________________
>
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