The oil temperature gauge normally operates with 7 bars displayed (see below) but yesterday intermittently went to 8 bars for a short period. Under similar conditions today, it stayed constantly on 7 bars
My mechanically challenged mind does not understand what would cause the oil temperature to rise when the coolant temperature gauge remains normal? I could understand the excessively hot day putting pressure on the radiator/coolant temperature, but I thought the oil temperature would be fairly removed from ambient temperature? Doesn’t the cooling system keep the engine block at a relatively constant temperature? Could anything else eg turbos, Regen, transmission impact indirectly on oil temperature?
Not sure if it is still the case, but Kia Cerato by default does not display a temperature gauge. You have to dig down in a menu to find it. I think the rationale is that you need not worry about engine temperature until it becomes a problem (warning light will appear). If you are stranded in the outback with an overheated engine on a hot day though, you may have preferred some additional warning?