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Unfortunately I listened to the shop again and actually went nearly 500 miles on initial start up oil. I was only ok with this because: A) the shop said it would be fine fml. B) I couldn't find anymore VR1 10w-40. Normally I've changed the oil right after a heat cycle, again at 50, 500 then at normal 5000 mile intervals. (That's what I get for changing up what has worked)
When it comes to piston wall break-in you actually want a more aggressive approach. Whet I've done and have had solid compression numbers is for several miles even some times after first drive I would be on a long stretch and vary my speed around 20 or so mph putting load on the engine then full engine decel. This helps "seat" new piston rings to the cylinder walls.
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