replacing bad u-joint

[wes104]

i have a bad u-joint that im about to replace on 1989 gmc r3500 with a 454 dually and was wondering should i use a greaseable one or none greaseable ?also are there any real good brands i should look for or any to aviod?its the one connected to the rear axle if it helps any

[txab]

Greaseable

[Logan Lanfear]

Greaseable for sure if you remember to actually grease it.  Moog makes good parts.  

https://www.rockauto.com/en/catalog/gmc,1989,r3500+pickup,7.4l+454cid+v8,1164103,drivetrain,universal+joint,2392

Stick to the heavy duty section. 

[Mikebtte]

3rd on the Grease and remembering to add Grease. I use Spicer when its available. Moog also makes good stuff.