Been using the AMSOIL engine flush ever since it came out. Reduced the complaints about excess oil consumption after change by about 75%.
If you don't, or won't, flush, keep an eye on the dipstick. If you note a sudden increase in oil consumption, it is probably because the synthetic has been cleaning and carrying stuff to the filter. Change filter, top off and continue. If the oil seems exceptionally dirty, then change the first batch after 3-4,000 miles.
AMSOIL (or BG) engine flush will do a good job in a short period. AutoRX apparently (I have no hands-on experience) does an excellent job over a longer period.