I ran a Scangage 3 on Both my 2021 and 2024 L8T 3500HD trucks. Even when towing my 12k+ fifth wheel my oil temps never went over 230 and typically ran mid 210's to mid 220's I ran either Mobil 1 5W30 or GM dexos 1 Gen 2 oil in them, never added a drop between changes.No oil temp gauge on mine maybe higher trims have one.