<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Tod, Mercedes AMG engines, one man one engine, it built with Mobil One, taken the engine to the dyno, run to red line, and either makes the hp and torque or is rebuilt. They only use Mobil One in the entire process.<div class=""><br class=""></div><div class="">I also agree that many cam mnf recommend the use of a special lube during brake in just as you mentioned.</div><div class=""><br class=""></div><div class="">I have always used Mobil One, and am impressed with its performance and longevity as an oil.</div><div class=""><br class=""></div><div class="">Larry<br class=""><div><blockquote type="cite" class=""><div class="">On Nov 14, 2015, at 5:19 PM, Tod Brown via Tigers <<a href="mailto:tigers@autox.team.net" class="">tigers@autox.team.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<font face="Arial" class="">My understanding is that the most important issue
with flat-tappet engines and lubrication is that<br class="">
<font face="Arial" class="">the initial br<font face="Arial" class="">e<font face="Arial" class="">ak-in is crucial to longevity. For the first</font></font></font>
1500-2000 miles <font face="Arial" class="">of operation it is extremely <br class="">
<font face="Arial" class="">important that the proper level of zinc
additive (i.e. zddp) be<font face="Arial" class=""> <font face="Arial" class="">provided
so that cam surfaces<font face="Arial" class="">, rings<br class="">
<font face="Arial" class="">and cylinder bores be allowed to seat
themselves. Newer oils are too slick to allow the
necessary<br class="">
<font face="Arial" class="">scuffing to take place, whereas the
presence of zddp provides enough friction for the
seating to <br class="">
<font face="Arial" class="">take place. Once past the initial
break-in, zddp is no longer as necessary. I have
not seen a definitive<br class="">
<font face="Arial" class="">statement as to whether zddp is
necessary after break-in but many sources
recommend that an<br class="">
<font face="Arial" class="">oil with higher levels of
zddp be used. <br class="">
<br class="">
<font face="Arial" class="">I found the discussion at <a href="http://www.hotrod.com/how-to/engine/ccrp-0702-break-in-new-cam/" class=""></a><a class="moz-txt-link-freetext" href="http://www.hotrod.com/how-to/engine/ccrp-0702-break-in-new-cam/">http://www.hotrod.com/how-to/engine/ccrp-0702-break-in-new-cam/</a><br class="">
<font face="Arial" class="">to be helpful. Note that<font face="Arial" class="">, at the end of the
article, there are some recommendations
for oils with<br class="">
<font face="Arial" class="">higher levels of
zddp, usually used in diesel engines.
<br class="">
<br class="">
<font face="Arial" class="">Cheers,<br class="">
<br class="">
<font face="Arial" class="">Tod Brown<br class="">
<font face="Arial" class="">B382002384LRXFE<br class="">
<font face="Arial" class="">TAC #864</font><br class="">
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