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Discussion Starter #1
I have read two articles on this recently. The first one says fill the box with 90# oil. The second says to fill it with grease. Which one is correct?
 

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There is actually a special type of grease that goes into the box. Lighter than axle grease but heavier than 90wt oil. I don't remember what it is but I think it's been discussed on this forum many times so you could probably do a search and find lots of information about it. I do know it's definitely not 90wt oil.
 

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Stanger,

I used a synthetic grease, CV-2, though I later discovered that For made a specific grease for the application. I thought about cleaning out the box and repacking it the Ford box grease but have not experienced any problems with the lube I used. The CV-2 goes for $10 a tub while a good Hi-temp moly should run 2 to 4 a tub. I never checked with the Ford dealer regarding the price of their box grease.

Hope this helps,

Pat
 

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The steering box grease is Motorcraft XG1-C, available at local Ford dealers.
 
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