UK Cub Nut
Registered User
Southern UK
Another Q for the C90 gurus
My PA-18 flight manual and the E-252 say that the max oil pressure for my C90 -12F should be 40 PSI, my Pressure gauge even has a red line at this value.
My engine runs beautifully with an indicated oil pressure of 50psi when warmed and running in an OAT of 0deg C
Form X-30010 the FAA approved Overhaul manual for C75,C85,C90,0-200 written by the people who made my engine says
"Oil pressure for cruising (psi) 30-60"
I.e it would appear my indicated oil pressure is within the Design Authority prescribed operating range
Do I need to get my engine looked at? or sail on in the knowlege that this is another one of those minor gray areas that are part of cubbing?
Many thanks
UKCN
My PA-18 flight manual and the E-252 say that the max oil pressure for my C90 -12F should be 40 PSI, my Pressure gauge even has a red line at this value.
My engine runs beautifully with an indicated oil pressure of 50psi when warmed and running in an OAT of 0deg C
Form X-30010 the FAA approved Overhaul manual for C75,C85,C90,0-200 written by the people who made my engine says
"Oil pressure for cruising (psi) 30-60"
I.e it would appear my indicated oil pressure is within the Design Authority prescribed operating range
Do I need to get my engine looked at? or sail on in the knowlege that this is another one of those minor gray areas that are part of cubbing?
Many thanks
UKCN