HDTVTest: OLED TV burn-in is highly unlikely if you vary your content
OLED Displays burn-in has always been an interesting topic, with some users and reviewers complaining about serious burn-in issues in some of their OLED TVs, while others report of no visible issues. UK based HDTVTest performed a comprehensive 6-month test on a brand new LG E8 OLED TV and found no sign of permanent burn-in.
HDTVTest says that they displayed varying content for 20 hours a day for more than 6 months (a total of over 3,700 hours). They also suggest to put the TV in standby mode rather than complete power-off so that the compensation cycles can run.