Oil purge with oil thermostat

Oops - forgot to check for other posts with same content....

I got my answer - prefill the cooler (small amount, I guess), let the oil bleed through

a small hole in the thermostatic valve. And if I want to be REALLY sure,

I can heat the thermostat...

Hi.

Tomorrow I'll fit new oil lines. So I'll of course purge the system.

But, since a thermostat is blocking oil entry into the oil cooler -

and the oil cooler is first step after the reservoir - how can I get the air out?

I have a 914 on a Auto-Gyro MTO Sport gyrocopter...

Cheers

Erik