I pulled into Ford dealer today (I take my amsoil xl 5w30 there in the winter and they change it for me) too cold. Service advisor comes out and says hey...you brought wrong oil....it's 530 your escape tales 5w20. I said I have 240,000 miles been using 5w30 all along...please put it in. After hearing about how its not good for 20 min. He agreed to install it. Lol though that was funny. Hasn't messed up yet don't think it will