I've been using Suzuki 10w-40, but want to use something better, possibly Klotz techniplate 10w-40. I can get it at MPS which is 5 minutes from my house over on South Hamilton Rd over by Groveport High School. I can also hit Ask cycles in Grove City fairly easily, and they carry some other brands. Anybody got a favorite, or more importantly, what should I stay away from? Thanks.