TOPIC:

Thanks to the community for helping me get a 1981 kz440 Ltd I recently bought in shape. Unfortunately I failed to do my research on here when it came to the oil change before the first start up after many years of sitting. I used Castrol POWER1 10w40 motorcycle oil. Bike started up fine and I ran it briefly but still have some work to do before it is ready for a ride. Now that I have read a bit here, I am having trouble identifying if the POWER1 has “friction modifiers” or if it will be ok to use. If it is the wrong oil, any advice on changing/flushing it out? Here is a link to the oil used:

www.castrol.com/en_us/united-states/home...4QAvD_BwE#tab_10w-40

thank you in advance for any advice. 

Your good. The spec sheet says it JASO rated. It also mentions it’s good for wet clutch. 

Thank you for your help! That is good to hear. 

Nothing wrong w the Castrol Pwr1, it's a motorcycle oil & says it's good for a wet clutch. 
A good alternative is Shell Rotella 15W-40 regular in the white bottle.  It has the JASO MA rating and is usually cheaper than other oils & often times goes on sale at various stores.  Chevron Delo & Valvoline Premium Blue are a couple of other heavy duty engine oils marketed for diesel engine use & having the same sort of anti-wear additives as motorcycle oils.  Delo goes on sale sometimes. 
One caveat is that the 15W may not be great during cold weather or in northern climes.

ps: for any engine oil check the msds to see if it has ZDDP or ZDP. ie, zinc-phosphate compounds. usually expressed as a percent.