I have four vehicles with closed knuckles. What grease do you recommend I use to lube these? Where do I purchase it, how much does it cost, and why is it better?
This is the way to approach getting your point across on this forum. Forget about other brands of vehicles for now. Since this is a CJ forum, I recommend you simply show guys that there is a better product out there and why, and people will listen. You obviously have spent a long time researching greases, so perhaps you have something useful to share in this regard.
I personally don't need to know the details of your crusade, but want the technical reasons why I should switch to a new grease.
Edit: I missed the Novak link posted above. $68/gal. is kind of steep. It would take a long time to go through a gallon. Do you know a place that sells smaller cans? This is new information to me about this grease. I have been using the wrong stuff all these years.
About the best I can say is this type of grease, It was what Jeep used for initial factory fill,
As far as the amount, Jeep specifies "as required" now I have learned from my research that guys back in the day would tip the rig up on its side to fill the knuckle, and get more in there than the static halfway point,
This is a good idea for a couple of reasons
#1 This insures the entire seal (wiper) stays wet,
#2 This also insures that the upper trunnion bearing will be splashed lubed when operating in 4x4 mode,
This is why Toyota moved the fill plug on the replicated Dana axle to above the 3/4 way mark and gotta hand it to them good idea,
So the little Jeep axle would use a bit over a 1/2 of a gallon I would imagine, and be aware that the wheel bearings are filled with this lube as well
One of the only manufactures that spec a amount is International which is 32 oz per side,
Ford indicates 1/2 pint per side, but they have two different sizes of axle a 8 bolt design or a 12,(wiper seal) the larger would use more lube,
So that is the rational behind the amount, and sure a bit steep but the longevity that can be obtained balances that out, purchasing u-joints, bearings and seals adds up in a hurry,
So This is what I have learned, there are 3 things to do with this axle
#1 Once it is filled, leave it alone, do not introduce any other form of lube,
#2 Operate 4x4 mode occasionally to lube the upper bearing
#3 When driving in wet and freezing conditions when parking the vehicle rotate the steering wheel lock to lock,.
Also be sure to clean the entire assembly out very well, if a different form of grease was used, and of course squirt a bit in there now and again once a year would be enough, or every other time its in for a oil change,
So that is why when you read the patents for these things they are considered "practically maintanace free"
Also with this semi fluid grease inside the knuckle a viscous seal of oil forms around the wiper seal and this assembly is not vented to the atmosphere so while in operation a slight amount of pressure will build ensuring nothing will get inside. A ideal environment for The wheel Joint and all other bearings,
These axles can be air tested for integrity a small amount of air pressure held for a period of time. I do not know the details for how much or how long. Only that it was done when this axle was used to get guys places to kill people,