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A year ago I set out to find what the semi-fluid lube in the closed steering knuckle of a 1988 Toyota land cruiser, It all started when I called the local dealership and asked what this was. Well I could tell I was not getting the straight scoop from the service manager, and what was indicated to use in the FSM didnt add up. It states to use a molybedendum disulphate lithium chassis grease #2, this term as I found out thru a oil and grease supplier is a rather vague term, This additive is found in all sorts of lube anything from oil or grease of any base and in its pure form used as a dry lube,
I knew something of this sort had to exist since I had seen this form of lube in a viscous coupler but had no idea what it was only that its characteristics where not what you normally encounter with oil, or grease
So I began reading in a old Motors manual to see what the manufactures used in the 60,and 70's. Ford stated to use 1/2 pint of the "proper lube" International indicated to use a viscous chassis lube, Dodge's term was "short fiber wheel bearing lube" all these terms still left me wondering what in the world this lube was, but did conclude that this was a fluid lube from these terms,
Then knowing that this design can be traced back to the WWII era vehicles I acquired a old Jeep book, In it I found the answer, sodium based lubes where used at the factory for initial fill, a #1 or #0 sodium based grease depending on temp.
In the #0 form this is a semi fluid lube, so I began trying to find some of this lube it took a while but I did find some the only way it I was able to get it is in bulk so I saved my pennies and ordered some and sure enough this was the stuff,
In my research I found that Dodge,s term was the best clue as well ''short fiber" is a term associated with the soda soap greases which is another term for sodium based
In reading up on this base of lube it is used in area,s that are prone to leakage and where high service intervals can be obtained, and in this application a slight amount of discharge is desirable to coat the exposed steel ball with a film of lube to prevent rusting and pitting,
Some how this form of lube has made its way down thru history and winds up in odd places, The only reason I have seen that it is no longer widely used is that it is incompatible with any other base of grease, seldom seen and rarely used is how I have seen it described, and I may add even more so misidentified, This form of grease is mostly misdiagnosed as axle seal failure in the closed knuckle application, which is understandable it has that appearance, the only reason that I thought twice about it is because I had seen it in a application where cross contamination could be ruled out. Thanks Frank
I knew something of this sort had to exist since I had seen this form of lube in a viscous coupler but had no idea what it was only that its characteristics where not what you normally encounter with oil, or grease
So I began reading in a old Motors manual to see what the manufactures used in the 60,and 70's. Ford stated to use 1/2 pint of the "proper lube" International indicated to use a viscous chassis lube, Dodge's term was "short fiber wheel bearing lube" all these terms still left me wondering what in the world this lube was, but did conclude that this was a fluid lube from these terms,
Then knowing that this design can be traced back to the WWII era vehicles I acquired a old Jeep book, In it I found the answer, sodium based lubes where used at the factory for initial fill, a #1 or #0 sodium based grease depending on temp.
In the #0 form this is a semi fluid lube, so I began trying to find some of this lube it took a while but I did find some the only way it I was able to get it is in bulk so I saved my pennies and ordered some and sure enough this was the stuff,
In my research I found that Dodge,s term was the best clue as well ''short fiber" is a term associated with the soda soap greases which is another term for sodium based
In reading up on this base of lube it is used in area,s that are prone to leakage and where high service intervals can be obtained, and in this application a slight amount of discharge is desirable to coat the exposed steel ball with a film of lube to prevent rusting and pitting,
Some how this form of lube has made its way down thru history and winds up in odd places, The only reason I have seen that it is no longer widely used is that it is incompatible with any other base of grease, seldom seen and rarely used is how I have seen it described, and I may add even more so misidentified, This form of grease is mostly misdiagnosed as axle seal failure in the closed knuckle application, which is understandable it has that appearance, the only reason that I thought twice about it is because I had seen it in a application where cross contamination could be ruled out. Thanks Frank
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