2-3 drops
You answered your own question . . . it sounds hollow and muffled because you put Speed Cream on your bearings. This keeps the bearing parts from rattling around loosely, making noise. Your board is sounding the way it should . . .
Before buying skateboard bearing you need to have knowledge regarding whether it has good load capacity or not. Along with that checking the lubrication and ensure easy maintenance is important. The skateboard working and speed will tell whether bearings are good or not. ionicflux. com/collections/bearing-lubes
Heavy cream, sugar and vanilla.
3 scoops
Probably not considering they're roller blade bearings
It typically depends on the brew and how much cream and sugar you put in it.
I would imagine they put it together in two halves, put the the cream in one half, and then put it together.
No all pool motors have sealed bearings
If the trucks use 8mm bearings (probably do, most of them do) then yes.
Whipped cream is put on pumpkin pies.
If you put the ice cream out in the sun, it will melt down.
Whatever type of motor oil you put in the engine, will lubricate the rod bearings along with all the other bearings and moving parts.