Steve, Continentals are known for normal high oil consumption. Please purchase an engine manual to check, but I believe as high as one quart per two hours is acceptable. Check on your actual oil level - because another characteristic is that if you fill to the limit, the first quart or two burns off very fast, then slows down. I keep 3 1/2 to 4 quarts and get very low consumption (or breather overflow). I had this same experience with my former aircraft that had a larger Continental.
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Alon A-2 () ()
s/n A35
N6359V
based at RHV - San Jose, CA chief pilot: David Smoler
[EMAIL PROTECTED] wrote:
>
> Coupers,
>
> What is considered acceptable(normal range) oil
> consumption for a stock C-75? The cylinder pressures were
> all 76-78 psi at annual in September. It seems that I
> have excessive blow-by, having to add 1 1/2 to 2 quarts
> per 10 hours. There is no visible smoke at any time
> during operation. There is visible oil, presumably from
> the blow-by hose, exiting at the cowl base. Not large
> amounts, but noticeable streaks. The engine performs very
> strongly...smooth running and good climb rate with 5 gph
> fuel consumption. What does the collective think?
>
> Steve, N87337, 1946 415C
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