This is a completely uncharted area for me.
For example, a father requests his sons to continue a business, or to stay in the same town, or not to leave the country, or to wear white socks, or to call a grandson in his name etc. Something that does not relate straight to father's good, unlike learning Torah in his memory.
To what extent is father's will (non-monetary requests) obligatory for his sons? Is it Halachicly equal to requesting while alive? Do the same Halachic principles apply?
The Gemmarah (Gittin 14b) vaguely mentions that fulfillment of a will is a Mitzvah but in some specific monetary context (thank yO):
"ר' יהודה הנשיא אמר משום ר' יעקב שאמר משום ר"מ מצוה לקיים דברי המת"
What the parent can and cannot obligate the kids to do after their passing away?