Hi it is an aftermarket oil to air cooler that will be behind the front grill with direct airflow. I do have an oil temp in my car's cluster gauges.If this meets all the specs i probably would be comfertable whith using the pennzoil.
In my hard driven bmw i have used shell penzoil now for 50k miles with good results.
A thinner oil flows faster through the system so spends a shorter period in the heatspots so it doesnt degrade as fast, due to the higher flow it also can cool the hot parts better.
Is the oil cooler an original oil cooler or was it aftermarket fitted?
Is it an oil to water heat exchanger or oil to air cooler?
Do you have an oil temp gauge etc...?
I am guessing its an oil to water heat exchanger, i personally think this is also the best one you can have.
Oil temps should not really be able to come above maximum 120 celcius.
Most of the time it should go on par with the engine temp which should be around 90 a 100 celcius. max.
The real hotspot is the turbo although with such a modern engine i also think its watercooled as well.
I now read this so i assume that you will aftermarket fit an air to oil cooler in the front bumper?
I am more familiar with hondas and know that the newest fk8 type r 320hp 2l turbo engine uses 0w20 and people run that on trackdays with no problems. The honda engine is also used in the american formule 3 cars and they also run the 0w20.
The oil cooler starts being used after oil temp reaches 85 celsius