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Subject: Re: [LML] Re: Oil filter
From: Colyn Case <colyncase@earthlink.net>
In-Reply-To: <list-6856131@logan.com>
Date: Mon, 5 May 2014 02:41:14 -0500
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References: <list-6856131@logan.com>
To: "Lancair Mailing List" <lml@lancaironline.net>

Interesting idea.  I agree the filtering efficiency of a/c oil filters =
is appalling.  However, after taking the Continental course, it's my =
distinct impression that a big part of why our aircraft engines work =
today is because they've been tweaked in subtle ways to address the =
failures of the last 50 years.   In other words we know what we know =
because of massive field experience, more than anything else.  ...and =
Continental (or Lycoming) made the minor changes they made because each =
stopped some catastrophic failure mode.

 I looked around for specs and couldn't find any.   I would want to know =
some things before I put one in my airplane.  like:

- what is the oil flow in gallons per minute of an aircraft engine oil =
system vs. an automobile?
-  at that flow rate what is the pressure drop across the oil filter?
- how much more oil pressure will I see on the upstream side of that =
filter than I would with a inefficient aircraft oil filter?
- how does my oil pump and anything connected to it respond to that =
pressure?
- is there a bypass feature in the filter in case an internal blockage =
develops in the filter?  If so, at what pressure does it kick in vs. an =
aviation filter?
- what happens to my flow rate at low rpm?
- at startup, how long does it take oil to reach critical locations?

Colyn


On May 2, 2014, at 11:17 AM, William Rumburg wrote:

Hi Jim -

I've meant to answer this for a while, but kept putting it off. I've =
used a Mobil M1-107 automotive oil filter on my Lycoming IO-320 for over =
ten years. Them M1-107's gasket fits the standard Lycoming spin-on =
perfectly. It's a premium automotive filter and, although I don't have =
emperical evidence, I'm certain it's superior to antiquated 'aviation' =
oil filter technology. It's also considerably smaller than the Champion, =
which might solve your interference problem.
Here are Mobil's claims from their website... =
http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Extend=
ed_Performance_Oil_Filters.aspx

1) Remove more contaminants than conventional filters using an advanced =
synthetic fiber blend filter media
2) Holds and remove three times the dirt versus the leading economy =
filter brand
3) Reduces resistance to oil flow while improving filter efficiency
4) Withstands up to nine times the normal system operating pressure

Bill Rumburg
N403WR (Sonic bOOm)

----- Original Message ----- From: Jim Nordin
To: lml@lancaironline.net
Sent: Wednesday, April 23, 2014 12:17 PM
Subject: [LML] Oil filter

Lancairians,
I have an IO-360 with a spin on filter. The filter sits above the cowl =
just a bit. The filter is the Champion CH48108-1. Is there another that =
doesn't sit so high to interfere with the cowl?
Or do I have to buy a remote?
There are other filters but what works?
Jim=20

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