Have you noticed any clutch slipping since you used that oil? I'd go ahead and get it out and put 20w50 motorcycle oil in, synthetic or conventional. I don't think synthetic is really worth it if you change your oil every 1000 miles. I'm only putting about 20 miles a week on my Rebel, so I change it every 6 months, just over 500 miles. I warm the engine up before every ride, and have never found any sign of condensation in the oil. I keep it in the living room.
2016 Rebel, 2013 Royal Enfield B5, 2009 Genuine Stella, 2006 H-D Sportster 1200, 2006 Vespa GT200, 2001 Yamaha XT225
"I refuse to believe in a risk free society where the thrill of living is traded for the safety of existence." — Nick Ienatsch