Diesel Question ?

I am a diesel technician and the problem with the 7.3 diesel engine is the injectors, they will sludge in the oil side of the injectors. It uses from 500 to almost 3000 pounds of injected oil pressure to fire the injectors. What we do is drain 1 gallon of oil and add 1 gallon of diesel fuel to the oil and let it idle for 1 hour,every once in a while we would snap the throttle but do not drive the vehicle. Then we would change the oil and use Motorcraft 10w30 diesel oil. If the base engine is not worn out it will help the performance when cold.