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From: Dale Rogers <rogersda@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Oil Change
Date: Wed, 18 Aug 2004 10:30:22 -0400
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> 
> From: echristley@nc.rr.com
> Date: 2004/08/18 Wed AM 09:34:10 EDT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Oil Change
> 
> 
> 
> ----- Original Message -----
> From: DaveLeonard <daveleonard@cox.net>
> Date: Wednesday, August 18, 2004 0:21 am
> Subject: [FlyRotary] Re: Oil Change
> 
> > BTW, the oil still looks very clean 
> > except for
> > the green from the 2-stroke oil.  Much better than
> my car oil looks 
> > after 50 hrs.
> > 
> 
> One of the things I was often warned about when I
> used to drive for a living, is that the
> 'cleanliness'of oil is not to be trusted.  The
> crankcase oil contains additives that reacts with
> acid created by the combustion process and not all
> the contanminants are visible to the naked eye.
> 
> 'Course, I was always told this by oil salesmen. 


   That's why many truckers and racers send samples of their 
oil out for analysis.  Seems like I read that this is a 
service many FBOs offer, too.  

   It's a lot better to find out the bearings are about
to fail from the amount of microscopic babbit in the oil, 
than when you hear the "death rattle" at 1000' AGL.   8)

Dale R.