100 mile break in oil change

did my 100 mile break in oil change, drained everything out best i could, about 3 L drained, so i added back 3L. The dipstick is at the full mark, but technically not overfull, i read its best to have it half way between full and the bottom part. Anyway to get a little bit out? or should I not worry about it, its not out of the x zone but i feel like it ran a little hotter after I changed the oil. Maybe im just being paranoid. Any advice on if i should measure it cold or hot? I might just take it to service station when my trailer arrives, im not too confident i torqued it right since i put it back on by hand.

Then theres the front and rear diff to do and im not sure about the procedure for that even though i have the proper oil. Busted a few knuckles doing that oil change. 🙁