I have a Super Z with 27 Kohler with 1000 hours that just died yesterday. Dealer said it had a broken rod, and was barely measureing oil on the stick, or it was stained dark on the tip of the stick. Feels it just burnt up. This mower had the oil changed about two weeks ago, or about 60 hours. The unit would loose burn very little oil between changes, and sometimes make oil via gas mixing with it. My workers are to check the oil daily, although they admitted they have not been doing so. I find it hard to believe that it used that much oil. It has never leaked oil, and there were no leaks before or after failure that we or the mechanic found. I think the engine has a low oils sentry, but am not sure if this will shut down the motor upon low oil pressure. I figured with low oil the engine would have seized but not have broken the rod. The engine was still running after failure which makes me think it was not siezed. Could low oil under these circumstances cause the rod to break? Could there be oil in the muffler? Any thoughts on what might have happened, or what questions to ask the dealer? I would appreciate it. I hate to fork our $2400 for a new engine. Thanks for your help.