How long to break engine in?

Farmallgray

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Joined
Nov 4, 2009
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110
On my newly built pulling tractor I have about 12 hooks on it after a complete build with new pistons, bearings, cam etc. I'm running mineral oil with
some Lucas break-in additive. I want to change to synthetic but I'm wondering how long I should run it to break in before I switch. I tried to do a plateau finish on the cylinders. I honed them with 220 grit stones then lightly with 400 grit. I'm done pulling for the winter so I'm thinking about changing it in the spring before I start again. Would that be too soon?
 
You should be fine if you have 12 hooks on it already.
 
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