So, your question is "should I dump some solvent in my oil?". That's all seafoam really is...solvent and no, personally, I wouldn't...not in your case, where you say nothing is wrong.
I've used Seafoam to clean the intake manifold, seems to clean it up a bit, sure makes a ton of smoke out the pipe, but I wouldn't add any solvent to the oil...
Kreen fans, feel free to speak up, I've not used Kreen and my understanding (from reading the product description) is that it's a solvent as well...