Break it in before you run a tank fill. My oil needed to be changed with about 10 mins of run from new.
Open the bleed valve.
Dead head the fill ship (or attach to you tank with tank valve closed). Fill and release to 1k, 2k, 3k,. Check your YH vague vs your tank gague. Check oil...change oil.
Set up for first tank run. Set timer on your phone for 20 mins.
A). Turn on pump, close bleed valve, open tank and watch the timer. Then, close tank valve and open bleed off valve. Allow pump to run a/o load for 30 seconds. Shut off air pump, let the water pump continue to run for 5 mins. Go back to A (except for start the pump before you open the tank valve. Never start the pump against pressure in the system!!) and start over. I try to keep my runs 20-30 minutes even after the break in, and never allow it to get too hot.
Shoot'em good!
It bears repeating, and it was kinda buried in the above.... Please,.... Never start the pump against pressure in the system!!