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Obviously I am breaking in my new engine with 10W-30 oil. How long until I can start putting synthetic in it?
Thanks Guys
 

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I just got a new truck, how should I treat it during break in, and for how long? its a 2002 Ranger Edge, 3.0L V6
 

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I would run it around 500 miles tops before switching to synthetic. On my racemotors, I break them in on straight 30 weight, run one weekend at the track with the 30w petro oil, then switch to synthetic.
 
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