bobndot wrote:
On those temp readings are most of you running stock cooling systems or have you added an extra external cooler, either oil or trans. ?
Any truck with the factory tow package should come with a transmission cooler standard. It's the same for motorhomes, I have yet to see one without a dedicated trans cooler. After doing some research I am considering replacing my fan clutch with a high performance aftermarket model. Mine works fine but is 8+ years old and there are a lot of good reports out there on this upgrade for not a lot of money.
Living in southern Arizona {the forecast is for triple digits and zero precipitation for the next ten days... Arrrg!} I take the heat seriously. I flush/replace my coolant every 2 - 3 years and keep a close eye on the entire cooling system {hoses, clamps etc.}. I think running full synthetic oil {trans fluid and differential} is a good idea as well and like chicken soup, "It might not help but it couldn't hurt..."
Always carry lots of water and stay hydrated.
:C