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More like IF they rotate, because if they don't your going to loose the cam in a hurry. I suspect thats why the lower valve spring pressures at breakin time come into play, helping the lifter to rotate by less pressure.
I removed the inner spring for my cam breakin and rather than just the basic 20 or 30 minutes, I actually put about a 100 miles on the motor (at reduced rpm) before I put the inner springs back in.
I'm running STP as an additive, it is my understanding it is loaded with the 'good stuff' for cams. I plan to use it for the life of the motor.
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