there must have been a jetting or burn rate issue if it clogged your rotary valve up ,castor has a higher film strength and lower flash point ,the right oil actually does make a worthwhile difference ,in my experiences ive torn too many amsoil motors apart to consider it a good premix oil and the best builders in the country dont often recommend from what ive read heard and seen .but hey thats entirely your choice and your engine ,just making a suggestionAmsoil Dominator is synthetic and is designed to run at 50:1... it is red in color not green. Maybe this is newer stuff? I ran the Castor 927 like the previous owner did at 32:1 and it ended up clogging the power valve 100%. No more Castor for this engine.
My builder runs the Dominator at 50:1 and has been for years and years on his Zilla engines and they don't wear.
I did a plug chop before heading out to the dunes and it was rich. I'll leave it for now until the temp changes from 'hell' to something cooler
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