Hello 650rider. Welcome to the forum. Congrats on the new bike.
The warranty question can only be answered by you, the buyer. Fortunately, you bought a bike that little fails on. The oil issues are well enough known, a few balancer system parts should be replaced. The rest is basically equipping to meet your needs. I personally don't know of anyone who cashed in on a warranty claim after the initial year was up, or could have. Some of us throw the dice, some of us wear belt and suspenders. Play the way you feel it.
Oil. Oil is good. Changing it often is good. Discussing what brand is not. There is nothing magic about Kawasaki oil. There are at least four, maybe five brands available in the United States that can be found at Wal Mart or any truck stop. All at a fraction of the price asked for oil at the dealer.
Google "Bob is the oil guy". See ya in the spring.
Diesel rated 15w-40 has found acceptance in most motorcycle communities.
“many a trip continues long after movement in time and space have ceased”- Steinbeck, [I]"Travels with Charlie"
[FONT="Century Gothic"][I]Sometimes your only available transportation is a leap of faith[/I] [/FONT]