Oil hiding is norm for jet engines.For b737
it is common to see oil level drops to ~65-70% in CRZ.If it coninue to lose >5% per hour,then you have a problem.Perhap what it meants by DONOT TOUCH THE THROTTLE was do nothing to the engines until LOW PRESS or HIGH OIL TEMP come.Meanwhile looking for ALT
would be wise.Inflight shut down is last resort,especially damaging to ETOPS operation.(not more than 2 shut down in 1000
hours).Do it too often then you wouldn't have
to do ETOPS.
