Hi Arbi. Welcome to the forums. It's a fantastic site to learn from. There are "stickys" inside each subject that are there to streamline information on some of the 'big' questions around here. Random breedings & BYB's are big topics that have been addressed many, many times. Please take the time to read through them.
I see that you are a resident of Los Angeles. In case you don't know, there is a mandatory spay/neuter legislation in the works that will be taking effect shortly. I can tell you that currently your dog would NOT be an exemption, and, by law, you will be required to neuter him. You might want to prepare yourself for that. On this forum in the Breed Specific topic there are threads that talk about this new legislature.
I've got no doubt your Diesel is a nice dog. If you or your friends are in the market for puppies I will be happy to provide you with some names of reputable breeders, or with Rottweiler Rescue of Los Angeles, occasionally puppies are available for adoption.