This question is directed at those who do (relatively) heavy towing with their light (1-ton) trucks.
My truck is currently equipped with factory in-radiator oil cooler along with the typical factory in-radiator trans cooler combined with a small front mounted oil-to-air cooler. I am getting ready to install my new engine / transmission along with an upgraded cooling system. My questions are as follows:
First, I have heard two schools of thought regarding plumbing trans/engine oil coolers. 1.) Plumb both the factory style in-radiator cooler and the oil-to-air in series. 2.) Omit the factory style in-radiator cooler and run only an oil-to-air cooler. Which do you prefer and why?
Second, what are your thoughts on installing cooling fans on the oil-to-air coolers? Will fans make any difference to oil temps at towing speeds?
Thank you in advance,