Should I be greasing my U joints?

Put a “grease-able” and “non-greaseable” side by side and look at the design of the caps, bearings and grease disk in the caps. The the cap seals are different and how they handle holding the grease. Also the weak spot in where they drill the hole for the zerk fitting. I’ll never use a “grease-able” one again after loosing the prop shaft in my truck as seen in my other post. But to each their own…

Spicer LV U-Joints Outperform the Competition!