The way I check mine which is a 722.3 version, from cold, I start and let run for about a minute, shut it off and then check a couple of times, from what I have gathered is it's supposed to be 10 mm below lower mark. In a perfect world the temp would be 77 F. After driving awhile and the fluid at normal operating temp the dipstick shows the correct level the top line. In the beginning I over-filled and siphoned off a lot.