TPO roof coating

I am puzzled as to why there seems to be a lot of differing opinions as to roof coatings to use on a TPO roof membrane. I have done a lot of searching, and have read articles that state some TPO roofs have different formulations when produced between certain years, and others, that go by date of maufacture as to what roof coatings are compatible...etc... What my ultimate goal is, is to put eternabond on all seams and openings and then go over the entire roof with a good coating. The coach part of the RV was built in 2007. That makes the TPO membrane 10 years old. I am not the original owner of the rig , so i do not know much of the PM that may have been done by the PO. My local RV dealer stated that they use Hengs coatings on all the roofs they coat. But i cant get a straight answer from hengs about tpo roofs..... Ugh