The mil spec for my plane (a Navion) is MIL-G-15, even older than the
references you provide. It cross references (after ALOT of digging) to
Aeroshell #6, which I use for everything requiring grease with the
exception of the prop. The old Hartzell gets Aeroshell #5 in the blades,
and Rheolube 374A in the A-38 bearing. Where the manual calls for 30
weight motor oil, I use LPS-2.

Rip

Jim Burns wrote:
...other than pork fat and olive oil

For those who do their own aircraft lubeing, which brand of MIL G-23827
Acft, Inst, Gear and Accuator Screw grease do you like? Why? any dislikes?

also for MIL G-3545 High temp/wheel bearing grease.

How old are these mil specs and have their been significant improvements
made in greases and should we consider a newer type grease??

Jim