Ok so I read the whole thing. I live in a very hot city with normal summer temps in the upper 90°s to 110°s.
I use Mobil 1 5W30, and my temp does get hot (haven't connected the cooler, yet) with normal city driving around 210°-230° and in spirited and track up to 275° then I pit.
When I installed the cooler I ran 230° under hard driving. That before one hose got damaged and started leaking.
Do you guys recommend going 5w40? our winters rarely see temps below 30°
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