Just in time for winter weather, we have published a Notification Letter for RV-12iS builders/owners outlining a new optional kit that allows you to block off part of the oil cooler for cold weather operation purposes. A new KAI section, 55iS-U, covers the installation of the winterization kit.
Three different-sized oil cooler covers are provided, and we recommend installing the FF-00126A (small) cover first and monitor how it impacts the oil temperature of your aircraft during normal operation. Oil temperature above 230°F (110°C) is acceptable during full-power climb-out. Do not exceed 248°F (120°C). If your oil temperature remains below 180°F (82°C) during normal cruise flight install the next larger oil cooler cover and monitor oil temperature.
Please review the notification post on the Van's web site service info page for the details:
https://www.vansaircraft.com/service-information-and-revisions/n-19-09-03/
Three different-sized oil cooler covers are provided, and we recommend installing the FF-00126A (small) cover first and monitor how it impacts the oil temperature of your aircraft during normal operation. Oil temperature above 230°F (110°C) is acceptable during full-power climb-out. Do not exceed 248°F (120°C). If your oil temperature remains below 180°F (82°C) during normal cruise flight install the next larger oil cooler cover and monitor oil temperature.
Please review the notification post on the Van's web site service info page for the details:
https://www.vansaircraft.com/service-information-and-revisions/n-19-09-03/
