Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 50; Flight Crew Total 2300; Flight Crew Type 30
Aircraft Equipment Problem Critical; Inflight Event / Encounter Weather / Turbulence
General Declared Emergency
Aircraft; Weather
The pilot flying has already reported this incident. This is just a backup and second opinion. On our cruise flight the engine stopped running. We declared emergency and glided to the next field. Before landing the engine started again. We supposed the engine had stopped running because of the outside air temperature below -30C. We had the mechanic look at the engine. He could not find any problems and joined us for a run up. He suggested flying some traffic patterns. We did this. We also asked Malibu experts and they confirmed that this problem happens from time to time if you are flying below -30C. The next day we added Isopropyl alcohol and could continue our flight without event even at lower temperatures than -35C.
The pilot/passenger not flying reports engine failure at cruise altitude. An emergency was declared.  During the descent the engine restarted and a successful landing was accomplished.