As far as this post, the original poster asked if the oil being a few millimeters over the full mark was an issue that needed to be corrected. Most of us responded that it was a negligible difference and to drive on without worry.
You may find issue with the oil being that much over full,
but the fact is no one else does. A plurality of posters here would likely agree. 
If I made statements similar to yours, as a mech. or technician, I would respectfully remove my ASE patch from my work shirts.
So apparently 2mm over-filled is a firing offenseā¦
If it was in error, no.
Fired? Canāt work without a patch on your shirt?
Nah, itās just that most people understand itās really not that critical. Manufacturers have already built in a boatload of margin so going over/under is not something worth worrying about. Thereās an old saying in engineering- perfection is the enemy of good enough. Wasting time on something that really is not relevant is not value added or beneficial in a meaningful way.
The things that really matter are usually spelled out in the service instructions. Things like torque specs on critical fasteners, process steps such as torque to yield on critical compression ratios for gaskets etc.
It is common in engineering to specify things in increasing degrees of precision depending on its criticality. A tablespoon of oil in that overall volume would have the capacity specified much more precisely than it is if it really mattered. 5.6Q would be 5.6001Q for example.
The manufacturers volume spec and the dipstick indicators already take into account that most people arenāt hovering over the fill port trying to get it exact. Frankly, if you look up the thermal coefficient of expansion for lubricating oils like this, you may find that winter versus summer will have way more effect on fill level accuracy for a given volume of oil than youāre willing to accept.
I would say any professional fretting over miniscule amounts of oil to make it perfectly align with the full mark would be in more jeopardy of losing their job than one that keys in a slightly higher value for the oil pump than it typically calls for. Wasting time on non-value added obsessions would be frowned upon.
Well you know what ASE stands for, right? Ask Someone Else! 
No worry, if a potential customer came in to a shop that I was running and asked to make sure that the oil level was within a tablespoon of 5.6 qts I would simply reply that weāre not the shop for you, good luck.
I was friendly with the saleslady from whom I bought my 3 Subarus, so when I was at the dealership (to pick up my new license plates) a few weeks after my latest purchase, I asked her about the status of the Subie that I had traded-in.
She related the tale of a wacko customer who finally wore-out the salesladyās patience. When she decided that she couldnāt take that customerās outlandish demands any longer, she gave the customer directions to another dealership, and suggested that the customer go there.
As Dagmar, the saleslady said, āI preferred to lose a possible buyer, instead of having to put-up with any more of her nonsenseā.
Where at in this tread have you seen anybody stating to overfill by one quart??
I was only trying to make a point, about this irrational need to overfill this or over-inflate that.
@ChrisTheTireWhisperer come on, man. This is just straight-up provocation. People disagree with you and then you only say āyou canāt admit Iām right because it threatens your manhoodā? I donāt care that you have your opinions, but let them stand on their own. On the other hand, people can mute you but Iām suspecting thereās some element of entertainment in light internet sparring.
Filling things, inflating things to spec, or to within in a certain Min<>Max window, is not āopinionā.
You know what Iām talking about. Itās a fact what the specs are as written, but itās an opinion that someone is running a risk if they overfill even marginally, even if they say theyāve done this for years without incident. Youāre trying to keep the argument going. And in the other thread about paving roads youāre inserting political bait.
In case youāre not aware of protocols, arguing with/defying a forumās moderators is not recommended. As Archie used to say to Edithā¦ stifle.
I thought that was, wait what is it called again?? oh yeah, now I remember, Common Since!!!
Now where do I keep hearing that at on here?? humm 
Dave, Itās āCommon Senseā
I think that CSA is what @davesmopar might have been hinting at.
Translate please
Haha, I never claimed to know how to spellā¦ 
