I have a Echo chain saw a Echo weed wacker and Stihl chain saw. Have been using Valvoline two stroke high performance motorcyle oil at 50:1 ratio with Sunoco 94 ultra gasoline. I have been using this combo for the past three years with no problems. I have been on the Amsoil website and seen their two stroke Interceptor oil. I was wondering if this would be a good upgrade in oil quality or the Mobil 1 MX2T two stroke motorcycle oil. Thanks.