29 degrees Monday morning here when I went flying. I installed an oil cooler shutter but not the Bowden cable. Basically wire it full open for summer and full closed for winter. Last winter I plugged in my Reiff oil Sump Heater on November 1st. and left it on until March 1st. (fly every week or two). I also use a cowl blanket in between uses. It maintains an oil / case temp in the mid 90’s. Even down to -40 F. Keeps the whole front end warm. On cold days I also throw a milk house heater in the cockpit while I do my preflight. Darn thing starts up smoother in January than it does in June!
EAA Tech Counselor
RV-9A #92103 - N803DK
G3X, Superior XO-320, Dual Pmags, Catto 3B
1974 Bellanca Super Viking - N16AW - Flying
RV-8 #83565 - N184DK - building
1968 Mooney M20C - N6801N - Sold
1956 C-182 - N744W - Sold