Oil for engine break-in

[Jay Whitely]

Hello all,

What grade dino oil is recommended when a motor is
*completely* rebuilt with new rings and bearings?

How many miles should be put on the motor before
switching over to 5W30? I do not plan on using
synthetic on this motor.

Secondly, what grade oil would be recommended if you
have replaced only the rod bearings? How long is the
"break-in" for bearings only?

Thanks,

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Jay Whitely
Tampa, FL
1996 200SX SE-R
GTi-R powered, F-MAX Stage 2