I cleaned the engine bay and worked inside a garage. unbolted the air intake nuts above radiator but kept intake hose (MAF) connected to engine at all times. no CEL and just moved box out of way each time I checked levels.
Engine wont even start without air box(MAF connected). I tried and it just stalls
I had success removing measured amount at cold ambient temps.....replacing measured amount at cold ambient temps. Dip stick is in spec when cold and Still in spec when hot (past 122 degrees). So far so good for me.