I assemble with STP and nondetergent 30wt. Cam and lifters get a whole jug of STP. On the stand I turn the pump till I see pressure and valve train oiling using 30wt break in oil. In the car, start up at high idle, 1200 rpm, shortly after If I don't hear any funny noises I adjust to low 2k rpm for 20 min with a good fan in front of the radiator and my eyes and ears open, looking and listening for anything. If your engine has open headers I would suggest muffling them before start up because if there is any clatter you won't be able to hear it. If your a success drain the break in oil with the oil of your choice. For high performance and flat tappets I use 15w40 diesel engine oil. I leave the filter on. A little extra ZDDP never hurts.
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