Hello, I am new of this forum. I would like hear your recommendation for the Amsoil for my 1996 Cherokee 4x4 Sport 4.0L 6 inline cylinders. I always use Mobil 10w-30 with PureOne oil or Fram X2 oil filters. I always change every 5000 miles intervial on my jeep. Where I live in Perris near Riverside in california and It is very hot weather everyday (95-107F temperature daily in summer time). Will amsoil 10w-30 handle hot climate? Question which should I buy regular amsoil 10w-30 or High performance 10w-30? Let me know thanks! PS. It has 123K mileage on motor and No leaking. I couldn't find someone who has cherokee with amosoil on search engine on this forums.