Jerry,by running the engine down the road, it running fast enough to splash around plenty of oil on the cam.And most new engines are OHC,the cam sees only pressurized oil, not splash from the sump. And those same new engines in new cars, does the factory run them in place with no load for 20 minutes? I don't know for sure, but I think not.I believe the first start up is at the end of the assembly line,then driven out to a holding area Then restarted by by a delivery person driven onto a truck or boat or whatever for shipment.Then delivered to the dealer an probably driven by a 18 year old new car prep guy.I do know modern hi line cars like Porshe,Ferrari etc engines are tested for proper operation on a dynometer, under load, then installed in the vehicle. Hi performance engine builders always run an engine under load for breakin and to make finalize jetting and timing.Jensen Marine here in NY ,builds big inch boat motors,all are broken in on a dyno under load, the engine even comes with a printout showing the torque and HP curves.
Ya know, it's another one of these things, you tend to do what works best for ya.
