Here is my "problem?" I have a Hustler 52" Z with 23 hp Kawi. It runs great, but on occasion (maybe 1 out of 10-15 restarts) on the trailer it will start with a good deal of blue oil smoke for a few seconds. It will never do this on the first start in the morning. it has 100 hours on it I am using Amsoil 10w30 switched at 80 hours from regular oil, yes it did it before the switch. I don't seem to be using any oil and it doesn't't smoke under load at full throttle. It is still under warranty, my dealer says that this is not considered a problem. I am not convinced. I was wondering that since it only does it on the trailer after going up a 45 degree angle ,if this has anything to do with it ? Does any one have any experience with this condition ?