OK gang, I know I shouldn't touch the dead skunk, not even with a 10" pole but I will. These are my beliefs and opinions and besides, its my engine to tar up anyways!
1: there have been many improvements in synthetic oil technology. like everything else, its an ongoing evolution, and todays "best" is tomorrows "runner up"

2:AA castor builds carbon deposits, and gums up. the big pluses are its High boiling point and its alcohol soluible.

3: modern synthetics are much better lubricants than AA castor.

4:the best thing for ANY engine is to run the best lubicant you can buy.

5: the only reason I dont run full synth in all my motors is not all of my motors are ringed (morgan fules recomends Omega for ABC,ABN,ABS ringlessmotors and cool power, full synth, for ringed.) and I dont want to keep aronud 2 different fuels. Everything I own specs 15% in the Manuel, even the wankel!


FACT: morgan fuel dose not run AA castor google 'em, goto there website!
FACT: I have let engines sit up dirty, & full of fuel for up to 2 years after being flown noly to drag them out, slap in a new plug, prime it, flip it, and GO!
Try that with sig!!

again these are my opinions, if you think im wrong, thats fine. Its my toy, If it blows up, I'll be the one dodging the shrapnel!