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<p>The external size of an oil filter is of little importance. It is
the surface of the filtration medium that counts, and of course
the size of the particles that can pass. <br>
</p>
<p>Modern engines are made to much tighter tolerances and better
materials, hence they wear very little, thus little debris and
contamination. Service intervals can easily be as much as
10.000mls or way more. Engine life for normal everyday cars is
usually beyond 200.000mls and over 500.000mls is not a rarity.
Often the mechanicals last longer than the electronics. <br>
</p>
<p>It is always difficult to decide when to change the oil filter.
These days I usually change the oil every two years with an annual
mileage these days of about 3000mls and change the oil filter
every three oil changes. When changing oil I find it remarkable
that the oil is still very clean rather than black. I now use
K&N filters and 10W50 or20W50 oil for motorbikes as these
have more additives than automotive oil due to various
regulations: Bardahl, MPM, Penrite, Castrol Power RS etc.</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 14-4-2023 om 00:19 schreef
llennep--- via Healeys:<br>
</div>
<blockquote type="cite"
cite="mid:1597552975.2300637.1681424393679@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div style="color:black;font: 10pt Arial, Helvetica, sans-serif;">Curious
Q. I have wondered the same thing. However, if you look at
filters for modern cars size dos not seem to matter. Many
engines today call for a 3 in long filter not 4 to 5 inch.<br>
<br>
<br>
<div
style="font-family:helvetica,arial;font-size:10pt;color:black"><font
size="2">-----Original Message-----<br>
From: Michael MacLean <a class="moz-txt-link-rfc2396E" href="mailto:springer.mike51@gmail.com"><springer.mike51@gmail.com></a><br>
To: Ahealey help <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a><br>
Sent: Thu, Apr 13, 2023 10:59 am<br>
Subject: [Healeys] Spin On Filter<br>
<br>
<div id="yiv3587799047">
<div>Someone please explain to me why the filter required
for my 1.8 ltr MGB engine (51515) is so much larger than
the filter called for the spin on conversion for my BN2.
(51516) Just to add to the confusion, a cross-reference
chart for either filter calls out the other filter as an
alternative. Does filter volume make any difference
from either car?
<div>Mike MacLean</div>
</div>
</div>
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