Pour 1/3 into your crankcase as if adding oil.
Pour 1/3 in the gas tank.
Pour 1/3 into the pcv valve with the engine on and running.
When all seafoam has been fed into pcv valve, turn engine off for 5 min.
Turn engine back on, and rev the engine up and let it come back down and keep going until all the smoke clears. Then go driving HARD for like a block or two, reset ecu, change oil, done.