Cooling air inlet duct opening.

[Cherrybark]

Those fins on the oil cooler are very delicate and a strip of firesleeve is a clever way to close the gap while protecting the fins. I assume the firesleeve is attached to the fiberglass cowling. How did you go about that?

I've been a little concerned about long wait times for engine warmup without a thermostat. What have you been experiencing Eddie?

[jiott]

My 912uls operator's manual says to idle at 2000 rpm until oil temp reaches 90F, then increase to 2500 rpm until oil is 120F. Then you are good to do the 4000 rpm mag check and T/O.