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From: ron@hpfcso.fc.hp.com (Ron Miller)
Newsgroups: sci.military
Subject: Re: re: Oil Dilution Systems.
Message-ID: <1990Oct26.021359.27577@cbnews.att.com>
Date: 26 Oct 90 02:13:59 GMT
References: <1990Oct23.010029.3371@cbnews.att.com>
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From: ron@hpfcso.fc.hp.com (Ron Miller)

> 
> From: rsiatl!jgd@gatech.edu (John G. DeArmond)
> 
> Lest we start another urban legend here, Let's make it clear:  There are
> NO additional maintenance costs associated with oil dilution assuming
> the system is used as designed.  Engine damage from gasoline oil dilution
> that most people hear about is as a result of the gasoline being introduced
> to the oil via the cylinders where it washes residual oil from the walls and
> rings in the process.  As long as the oil dilution system is used as intended -
> to restore the viscosity of cold oil that approximating ambient, nothing is
> harmed.  Gasoline does not have some mysterious ability to damage engines.


With all caveats in place, I agree. However, nothing works perfectly
all the time. (All the systems in my nuclear submarine certainly 
didn't!!)

> 
> If one wants to consided this in a different light, consider that 2 stroke
> engines run with oil dilution in the range of 40:1 to as little as 100:1.
> 
Usually on roller bearings which large radial aircraft engines don't have.
But we don't have to start 2stroke motorcycles with 90wt oil in them either!


Ron