Should I be greasing my U joints?

Replace them with new non-serviceable ones, aka that don’t have a grease fittings. One of the first things that should be done when buying a car. I learned my lesson in my ram. I old man the owns the drive line shop we use, only uses non-serviceable, as he said every time a broken u joint comes in it is a serviceable aka grease-able one. Here’s my cardon, aka front drive shaft of my truck..

View attachment 1715955992

I prefer greaseable joints. It's when you don't grease them you will have a failure but that's just my preference. I grease them once a year.