Do same rules apply??

[F-350MAN]

Hey everybody

I was checking my oil today,after my truck was sitting for about 10 mins. It was in my driveway at a slight slant but i've always changed/checked my oils that way,anyway my dipstick read below add, now on a gas engine i know how much to add. My question is do the same rules apply to diesel and when that low how much do i add I know in gas its about 2 1/2 qts. my truck has 85500 miles on it but does not leak a drop I also dont notice any blue smoke. Does a diesel burn oil more than a gas motor or are they both basically the same in this area

thanks

[Gear Jammer]

I think there right around the same but dont hold me to that!!!
But i would put oil in it if it needs it.