Alcohol is a learning curve, plain and simple, i've been doing it for 25 plus yrs. from blown,injected to regular injected, never carburated, Get it right and it's the best thing that will ever happen to your race car. Will it wear a motor out, i doubt it, will it eat bearing, yes if it's not tuned right, will it milk up the oil, yes if it's not tuned right. To me it's easier than tripping over your feet, but not at first, i too had to learn how to run it. I personally donot run top oil lubs, but that's my preference. I do however keep the system clean by useing mineral spirits to flush the system and pump after racing.
These are my opinions only.
Zip.