I have heat pads attached to the oil pan on my IO390 but I have no adapter from 110v to 240v so I have not been using it yet. Today it would have been good as the engine was difficult to start. (Around -4 centigrade on the ground)
My GoPros stopped shooting after about 10 minutes in the air.
I dialed in 23inch MP and 2100rpm, leaned just lop and got 140kt IAS at around 24l/h (6.5gph) :)
From the EFIS file: IAS 140kt, Engine power 46%, Fuelflow 6.4 gph, MAP 22.9, RPM 2110.
A video from the engine start and take off.