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One has to make a distinction here. If an engine is properly
"re-manufactured" or may be "blue printed" using modern tolerances,
finishes, hardening procedures, materials for bearings, pistons, valves,
valve seats, seals and gaskets, upgraded oil pump, upgraded oil filter
and the like, the engine will most likely last much longer than a brand
new original engine (if you could get hold of one) and one probably
could use modern oils. It should not need another overhaul for a long
time, most modern engines last well over 300.000 miles if maintained
properly.
If the engine is rebuild using the factory tolerances, use the specified
oil. It is likely that the engine will need another rebuild after
60-100.000 miles as would an original engine.
In the past I had many experiences with rebuilt engines of various cars
and they were of similar quality as the original engines. However, these
days you hardly ever come across
rebuilt or re-manufactured engines except for antique and classic cars
and it is very rare that they will exceed 100.000 hard driven miles
within ones lifetime so it is hard to say what is durable or not. Single
observations are of no value, to make a valuable judgement you need
documented numbers and lots of it.
So what do most people do? They adhere to the specified original
maintainance, i.e. 20W50 or single grade for the oldest vehicles and
rarely get involved in experiments that could be very costly if you get
it wrong.
Kees Oudesluijs
Bob Brown schreef op 24-6-2015 om 13:40:
> Andy
> About 5 years ago we had a club member that had his engine rebuilt by
> a very reputable shop. Following the rebuilt the club member insisted
> that the shop put Molbil-1 in the engine. The result was another
> rebuild with in 3 years. Don't know exactly what was the problem but
> the cam was damaged.
> Bob
>
> ------------------------------------------------------------------------
> *From:* Andy Thorp <bce257@yahoo.co.nz>
>
> *Subject:* Re: [Healeys] Oil again
>
> Out of interest, given all this oily discussion lately- has anyone
> actually worn out a reconditioned engine from normal road driving? I
> rather suspect you could put just about any modern oil in a Healey
> combined with a proper filter and it'd go for a whole lot more miles
> than an original one ever did on monograde.
>
> Andy.
>
>
>
>
>
>
>
>
>
>
>
>
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> 06/24/15
>
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<div class="moz-cite-prefix">One has to make a distinction here. If
an engine is properly "re-manufactured" or may be "blue printed"
using modern tolerances, finishes, hardening procedures, materials
for bearings, pistons, valves, valve seats, seals and gaskets,
upgraded oil pump, upgraded oil filter and the like, the engine
will most likely last much longer than a brand new original engine
(if you could get hold of one) and one probably could use modern
oils. It should not need another overhaul for a long time, most
modern engines last well over 300.000 miles if maintained
properly.<br>
If the engine is rebuild using the factory tolerances, use the
specified oil. It is likely that the engine will need another
rebuild after 60-100.000 miles as would an original engine. <br>
<br>
In the past I had many experiences with rebuilt engines of various
cars and they were of similar quality as the original engines.
However, these days you hardly ever come across<br>
rebuilt or re-manufactured engines except for antique and classic
cars and it is very rare that they will exceed 100.000 hard driven
miles within ones lifetime so it is hard to say what is durable or
not. Single observations are of no value, to make a valuable
judgement you need documented numbers and lots of it.<br>
<br>
So what do most people do? They adhere to the specified original
maintainance, i.e. 20W50 or single grade for the oldest vehicles
and rarely get involved in experiments that could be very costly
if you get it wrong.<br>
<br>
Kees Oudesluijs<br>
<br>
<br>
<br>
<br>
Bob Brown schreef op 24-6-2015 om 13:40:<br>
</div>
<blockquote
cite="mid:424411136.295618.1435146004115.JavaMail.yahoo@mail.yahoo.com"
type="cite">
<meta http-equiv="Context-Type" content="text/html; charset=UTF-8">
<div>
<div id="yui_3_16_0_1_1434563663825_723349"><span>Andy</span></div>
<div id="yui_3_16_0_1_1434563663825_723349"><span
id="yui_3_16_0_1_1434563663825_723525">About 5 years ago we
had a club member that had his engine rebuilt by a very <span
id="misspell-0" class=""><span
id="yui_3_16_0_1_1434563663825_723850">reputable</span></span>
shop. Following the rebuilt the club member insisted that
the shop put Molbil-1 in the engine. The result was another
rebuild with in 3 years. Don't know exactly what was the
problem but the cam was damaged.</span></div>
<div id="yui_3_16_0_1_1434563663825_723349"><span>Bob</span></div>
<br>
<div id="yui_3_16_0_1_1434563663825_723565">
<div id="yui_3_16_0_1_1434563663825_723564">
<div dir="ltr" id="yui_3_16_0_1_1434563663825_723563">
<hr id="yui_3_16_0_1_1434563663825_723978"> <b
id="yui_3_16_0_1_1434563663825_723929"><span
id="yui_3_16_0_1_1434563663825_723928">From:</span></b>
Andy Thorp <a class="moz-txt-link-rfc2396E"
href="mailto:bce257@yahoo.co.nz";><bce257@yahoo.co.nz></a><br>
<br>
<b id="yui_3_16_0_1_1434563663825_723889"><span
id="yui_3_16_0_1_1434563663825_723888">Subject:</span></b>
Re: [Healeys] Oil again<br>
</div>
<div class="y_msg_container"
id="yui_3_16_0_1_1434563663825_723567"><br>
Out of interest, given all this oily discussion lately-
has anyone actually worn out a reconditioned engine from
normal road driving? I rather suspect you could put just
about any modern oil in a Healey combined with a proper
filter and it'd go for a whole lot more miles than an
original one ever did on monograde. <br>
<br>
Andy.<br>
<br>
<div class="qtdSeparateBR"><br>
<br>
</div>
<div class="yqt1545142834" id="yqtfd22648"><br>
<br>
<br>
<br>
<br>
</div>
<br>
<br>
</div>
</div>
</div>
</div>
<br>
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<pre wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/archive";>http://www.team.net/archive</a>
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</pre>
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<p class="">Geen virus gevonden in dit bericht.<br>
Gecontroleerd door AVG - <a moz-do-not-send="true"
href="http://www.avg.com";>www.avg.com</a><br>
Versie: 2015.0.6037 / Virusdatabase: 4365/10088 - datum van
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