Have not flown since mid-December but have completed several mods to cooling system and oil temperature sending unit installation. Cooling system now has an air-purge line from rear iron to top of expansion tank and a new air intake diffuser sealed to front face of water radiator. The oil temperature sending unit is now in an adaptor (18mm male to female) between oil cooler outlet and engine block (no photos yet). Ground running on the weekend after 20 minutes (3000-4000 rpm) showed oil temperature at 180F and water at 150F ... we elected not to fly due to air temperature of 14F ... this weekend is forecasted to be 0F ... holding out for 28-32F ... hope this deep freeze is over soon.
Jeff