What brand of oil do you recommend.I recommend a quality 10W30 all year round, unless your winters are below freezing. Then 5W30 in winter.
Automotive oils are no designed to run at the higher operating temps of an air cooled engine. They also do not have zinc which is a lubricant for the wear parts especially the valve train.I just look for an oil which has the API & SAE approval stamps. Other than that I say it’s a crap shoot, but many on this forum will not agree with me. If you change it regularly it really doesn’t matter
I believe that new 0724 has superseded several part numbers, so that may be all you can get. I use WIX 51394 in place of most Kawasaki filters, unless the engine is still in warranty period.We use Kawasaki and Kohler I mostly use Kawasaki 10W 40 in other brands. I also use it in my CV20 Kohler. Good oil and use the Manufactures oil filters. Are you guys having trouble getting Kawasaki oil filters. Only one we can get is the 49065-0724.