The search button sucks... No luck there. I have an 08 w 4300k and going to buy some oil and a filter today. Been running Castrol semi synthetic 10W40 and a K&N filter but no one has in stock. I can get Kawasaki oil for $7. per quart and a Kawi filter for like $9. I don't think its semi synthetic though. Is it any good? Is it okay to make the change? Also everyone I talk to down here says to stay away from full synthetic. Any suggestions?? I know its a beaten topic probably but figured I'd ask the experts.