What is a good oil to use for 1st start up?

I have always started a new one up with the oil I intend to use (Mobil 1) then change it after break-in, havent lost one yet. Pre lube the motor prior to starting is a major must do. Its kinda hard to pre fill the filter unless it mounts straight up and down and I have always used a filter with the anti drain back valve in it.