318 Oil Question

Ok I Hear Of A Lot Of People Using Shell Rotella And Chevron Delo 400 15w40 Diesil Oils. I Use Shell Rotella 15w40 In My 80,000 Mile 318 With A New Comp260 Cam That Has 550 Miles On It Now.i Also Added A Bit Of Lucas Oil Stabilizer To It, But I Dont Think It Does Much. Im Getting Ready To Do Another Oil Change And My Father Has A Ton Of Chevron Delo 400 15w40 Sitting At Home(for His Kenworth). I Would Love To Take Advantage Of This If It Is Good Oil For The Package. Which Of The Two Oils Is Good?i Know They Both Have The Wanted Zinc. Is The Lucas Oil Stabilizer Worth Adding? I Did Notice Some Oil Pressure Gain When I Used It. Thanks.