I have a 2014 F150 Ecoboost, and I work it like a rented mule. I live in Utah at 6500' and I tow a full size travel trailer that weighs in at 5500 lbs. So I am pretty much always towing at elevations north of 5000', often in high temperatures(90+F, up to 100F), and often fighting a headwind, and of course pulling steep grades for miles on end. Last year I towed back from WY on a 95F day in a 30mph headwind and was having to run the truck in 3rd gear at 55mph(in a 70mph zone) to keep the coolant temps below 230F on the flat stretches of road, to give you an idea of the conditions I put it through. I have warped exhaust manifolds twice in these conditions. My truck routinely sees 240F coolant temperature on climbs during the summer. I back out of the throttle to keep it in the mid-230's.
I have an aftermarket intercooler, oversized transmission air/oil cooler, and I am also running a Setrab oil cooler that is thermostatically controlled to target 205°F oil temps. i don't know what the actual oil temps hit, but I suspect between the factory cooler and the Setrab they probably are low/mid 200's. I will also be installing a Mishimoto Aluminum radiator this spring to help with coolant temps.
So, what oil? In the past I have used QSUD, PUP, and Castrol GTX Magnatec. I have not noticed any negative side effects related to oil. Do I need something more robust?
I have an aftermarket intercooler, oversized transmission air/oil cooler, and I am also running a Setrab oil cooler that is thermostatically controlled to target 205°F oil temps. i don't know what the actual oil temps hit, but I suspect between the factory cooler and the Setrab they probably are low/mid 200's. I will also be installing a Mishimoto Aluminum radiator this spring to help with coolant temps.
So, what oil? In the past I have used QSUD, PUP, and Castrol GTX Magnatec. I have not noticed any negative side effects related to oil. Do I need something more robust?