Radial oil? Shell/Phillips

[Daddio]

I enjoy the honor of 'piloting' our wind generator, a Pratt Whitney R2800-CB3 18-cylinder radial. I recently encountered great difficulty finding Aeroshell W120 oil due to very high demand from the fire dept. A lot of old radials were fighting fires.
We have always used the same Aeroshell W120. Phillip's recently introduced a multigrade oil. X/C 25W-60 is marketed to owners of old radials. Has anyone tried it?

http://www.phillips66lubricants.com...2AEAD19/0/P66016AviationProductBrochure_5.pdf

Thanks,
D²

 

[PWR4360-59B]

Don't use a multi viscosity oil in a large radial engine.
Stick to the W120 or 120.
Read the information in the link.
http://www.precisionengines.com/pdf/oilBulletin.pdf

Also remember in Aircraft engines with silver bearings you DONOT want any
oil with zinc additives in it.

Oh and since you are in CA I see no reason to even consider a multi grade oil. Its not like it freezes there.