Originally Posted by DCRC
I'd just add it to the old. If you want to completely replace it I'd pull it apart and clean it all with a rag and solvent and start over.
In most cases there is hardly any grease in there to begin with if serviced from the factory.
So of you want to utulize the EZ ultralube type axles it is gonna take a pretty good amount of grease no matter what to even get the system functional.
One thing to consider. Three tubes of grease is cheaper than a set of seals you will need to hand pack the bearings.
Of course if you have any concerns over your bearings you may want to do a hand pack once to verify your bearings condition.
1999 Ford Superduty F250 PSD CC SB 6spd 4x4.
B&W goosneck/companion hitch, Airlift 5000 airbags.
2006 Sierra F28 Rear Kitchen 5th Wheel, 31' = 10k pounds.
Nights camped in 09-14, 2010-23