Re: Aviation Oil

["Louis F. Pechon, Jr." <bmwlou@xxxxxxxxxxx>]

I believe aircraft engines are geared.  The props turn slower than the
engine.

Lou
- - ----- Original Message -----
From: "Dancoe, John" <jdan@xxxxxxxx>
To: <oilheads@xxxxxxxxx>
Sent: Thursday, May 19, 2005 11:38 AM
Subject: Re: Aviation Oil


> >Speaking of oil burning - Does anyone have advice to offer as to whether
> aviation grade oil should be used in oilheads?
>
> DO NOT USE AVIATION OIL IN MOTORCYCLES (OR CARS).
>
> This is my understanding why:
>
> 1. General aviation aircraft have the prop bolted directly to the
> crankshaft
> (not geared)
> 2. Therefore, the motor must turn at the appropriate speed for a propeller
> 3. This speed is on the order of 2500 RPM, not 7000+
> 4. As a consequence of low RPM running, GA engines are much more
> susceptible
> to carbon buildup
> 5. Aviation oil is formulated to prevent this carbon buildup
> 6. This formula compromises lubrication properties
> 7. That's why GA engines have to be overhauled much more often than ground
> vehicle engines
>
> John D

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