Accelerated aging at high temperature coupled with extrapolation is typically employed to predict the service life of fusion bonded epoxy (FBE) coatings. This approach assumes that the aging mechanism at high temperatures is the same as it is at the actual service temperature of the coating. Our proposed approach for determining the service life of FBE coatings is to accelerate aging using increased oxygen concentration allowing data collection in a reasonable time and as close as possible to the actual service temperature of the coating. New data presented in this paper could prove that this could be a more valid method to predict service life of FBE coatings at high service temperature.