My brother owns and runs a machine shop and has built himself an LS1 for his Malibu. He has changed out the short skirt pistons for regular 350 Chevy rebuild type and converted it to carburation and replaced that funky water pump set up. But anyway here is the plan. He wants to start it and run it for 100 miles on his favorite 30W break in juice then switch to Amsoil 5W30 and do annual oil changes and biannual filter changes. We will do a UOA at the filter change to see how things are going. Does this sound like a sound plan? Not the motor the OCI.