Things have to be mutual in a friendship, otherwise one person is treating the other like a charity case, therapist patient, etc.
If your friend feels he can come to you and discuss a problem and seek advice, that gives you the right to do the same with him.
If he complains that too many people offload their problems on him, you can mention this directly before you bring something up. "I know a lot of people talk to you about their problems, and I dont want to add to that, but I could really use some advice"
Ur like me. We fear that if we discuss our problems, we'll go from "the great friend who never talks about anything negative" to "he's just like everybody else. But legit, if you have a friend you can't talk to your problems about, it's not a friendship. Your just doing whatever it takes to keep them happy and magically hoping they'll ask you if you have any problems one day.
If you had a real friendship, it would never have crossed your mind to ask this question. Trust me.