My local Napa auto parts store
stocks the Amsoil, but I guess I need to get their oil filter as well to
get the better filtration. Pretty interesting. I will probably run it
when I run my engine on the test stand as the plane isn't quite ready
for the engine and I want to do some testing.

After a rebuild, or for a new engine,  Use a name brand straight weight oil in the sump and

if the OMP is not used, premix a non synthetic 2 cycle oil. Run this for the first 2 hours at 2,000 RPM. Cut open the filter and look for bearing sparklies.

 

Change the oil to whatever you plan to fly on. If no OMP is used, premix a synthetic 2 cycle oil. 

The bearings are way oversized for the loads involved. Just about any oil is fine. At airplane RPM stresses are low. I use Redline 40 Wt. synthetic in the dry sump and Redline 2 cycle synthetic as the premix. Shifts are at 9,600 RPM. No lost bearings since 1980.

 

If you start off with synthetic oil in a new engine or fresh rebuild, it will take months of use to break in the pieces. Our best power is on the 4th weekend after a rebuild. With 24 end gaps, the engines gather up combustion debris faster than piston engines. Oil changes should be at least as often as a piston engine. 

 

Lynn E. Hanover  

 

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