Should be the same if its GF4 SM. You want higher zddp?, go with Rotella 10w30, yes ... 10w 30. Otherwise, John Deere +50 tractor oil or even briggs lawn mower oil is loaded and meets GF2/SJ typically. You know all the cars that went 300K miles NP? they used this old spec oil. Afraid tio run lawnmower oil in your car? Why? I'm afraid to run GF4 SL/SM in my car!