A lot of your 10W-30 weight oils will say "energy conserving". That is the main thing you want to stay away from.
The JASO Oil standard which is the oil standard for motorcycle 4 stroke engines is a standard that has been unchanged since 1993. Oil has advanced substantially in the past 14 years. So to say motorcycle oil is better than car/diesel oil in your motorcycle will not always be true.
Many oil analysis have shown that a lot of your JASO certified oils have significantly more molybdenum in them than many of your high quality sythetic motor oils.
I also use Rotella T synthetic 5W-40 in all my atv's and also my tractors. Your commercial grade diesel oil is desiged for extremely long service life and temperature. A lot of your industrial equipment runs off of wet clutch systems so it is wet-clutch safe plus you can get a gallon of the synthetic from Wal-Mart for $16. Rotella is the only oil recommended by Rekluse clutches.
FYI:
JASO Engine Oil Standards Implementation Panel consists of six organizations; Petroleum Association of Japan (PAJ), Japan Automobile Manufacturers Association, Inc. (JAMA), Society of Automotive Engineers of Japan, Inc. (JSAE), Land Engine Manufacturers Association (LEMA), Japan Lubricating Oil Society (JALOS), and Japan Boating Industry Association (JBIA) as well as other concerned companies (lubricant additive manufacturers).
Notice a Japanese theme here.