Since Ford specification WSS-M2C153-H regarding 5w20 oil exceeds API SL specifications and Ford calls for an oil meeting their specifications to meet warrenty, I would think that it doesn't matter who does the testing as long as the oil meets Fords specs. Is this the shape of things to come? GM specs, Chrysler specs, Toyota specs, ... Just paying attention to the little starburst could void your warrenty. Personally, I would go for the oils that meet Toyota's sludge engine specs. They would undoubtedly be the best.