I have an '06 f150 s-cab 5.4 4x4 it has 40K, highway speeds around 75 mph for an hour and my oil temp is 205, NJ is pretty flat,it was 65 degrees and I wasn't towing anything, isn't this high? What's normal operating temps?

 

Mines between 198 and 202 all the time

 

cool, but it seems high to me, you know over the past 5 years I've had a 1500z71, 2500hd all bought new, then this used 06 ford that has 26K now has 40K after 4 months, that I like the most, I think ford makes the best looking truck inside and out but this truck has zero power, i tow 5-7 thousand pound pumps once or twice a week, and it has a real hard time, I have a scheduled trans service tomorrow am but I may change it to a tune-up, somrthings not right

 

I took a road trip and i was trying to keep it below 200 but some times it'd go up to 208 when keeping up with traffic. I dont see any harm with that cause it went back down.

 

I don't know bro, water boils at 212, and you look at those dial-guages it seems 180 is always in the middle of the arc, you know what I mean

 

Running on the warmer side = more better. A warmer running engine is a more efficient engine, that burns off combustion byproducts better and doesn't sludge up as easily.

And yes, water does indeed boil at 212 degrees. However, we don't use straight water in most automotive applications, we use a 50/50 mix of water and antifreeze that boils at around 225 degrees. Then when the cooling system is pressurized to ~15 psi, the coolant doesn't boil until ~260-270 degrees.

~200 degrees is perfectly fine for operating temperature.