hi,everyone.i track my car very often.im using the castrol edge 5w-40 atm.im after some better oil for my needs.im thinking of getting the castrol edge 10w-60 or the redline 15w-50 oil.but either of these oil will put too much load on my oil pump and lose top end power.would that too thick for a 4cyl?what are your recommendations？

thanks
酸菜炖肉