REFLECTOR: Engine Lubrication

[Brian Michalk]

Interesting on the mineral oil comment.

So, I have a crazy idea regarding engine cooling.

If there is an emergency need for engine cooling, like near or beyond 
redline, would the introduction of water as a fine mist into the engine 
case be a way to cool the engine without damage to the engine?

One would think that the water would flash to vapor and be carried out 
the case ventilation tube in very short order.

aminetech at bluefrog.com wrote:
> Just returned from S&F.  I attended a very intersting forum on 
> lubrication and I plan to make some changes unless someone on the list 
> convinces me otherwise.  According to the speaker, all deposits come 
> from the fuel and not the oil.  All aircraft engines have at least 0.1 
> gph of fuel blow-by.  Fresh fuel and completely burned fuel at not too 
> bad, but partially burned fuel is corrosive.  Oils contain additives 
> that neutralize the acidity, but the oil becomes more "sticky" in the 
> process.  Guess that explains why I'm finding stuck rings in my 
> Franklin.  The speaker said that regular oils do not impede the 
> break-in process, and he has yet to find a valid reason for using 
> mineral oil.  One gallon of fuel yeilds one gallon of water when 
> burned, so I guess there will always be water in the oil.  There's 
> more, but I just wanted to pass that along and see what others think.
>  
> John
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