1940 Steering Box --- Oil vs. Grease

Never use plain grease in a steering box, fix the leaks or keep filling it with STP. Reason is that the top bearing on the worm gets dry when the plain grease settles down and scrunch starts. Many many 8N tractor steering gears have been ruint with plain grease.
 
Semi fluid lubes like John Deere corn head lube work pretty well and won't leak out when the seal gets worn. The stuff was developed for sickle bar gearboxes on grain headers and on corn headers for John Deere combine harvesters.
That's what I have been using. So far so good!
 
In flat heads that Ive owned,I used the 600 W that is sold by the vendors for model A rear ends trans & steering gears.It is about the equivalent of 250 weight oil & comes in a 1 qt plastic squeese bottle.
 
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