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C-90 Oil Pressure

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David Johnson

Premium Member
Apr 25, 2006
Reaction score
I just did my first two flight on my L4 C-90 project. In flight the oil pressure was running in the green @ 44psi. At idle when the oil is hot the pressure drops to 25 psi. I am running Aeroshell 100W. Is this normal or should I be digging deeper into this.

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