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Originally Posted by chubbybubba1
I will say this. I bought a bottle of the Royal Purple / Purple Ice Coolant Additive. I hooked up my scanner and went on a 15 min. drive using the live monitoring menu and recorded the highest coolant temp reading. Removed just the same amount of antifreeze(with the wife's turkey baster) as what is contained in the Royal Purple bottle. Went back out for 15 minutes and the temp. never got within 7-8 degrees of the first reading. The ambient outside temp. was the same each time. 33 degrees. I can't believe a product actuallly did what it claimed. They say 8-10 degree drop in a 50/50 antifreeze mix. I guess every bit of temp. reduction I gain is a plus. I might also need to install a auxiallry fan. I'm just not sure if there is the room for one.
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I big modification on these trucks, is to ditch the clutch fan setup, and get two good electric fans, attached to a temperature sensor. Two 2400 CFM fans, will push a lot more air than your clutch fan, at any temp you decide on.
Also, I doubt your tranny cooler is causing air flow issues, as this is also a very popular mod.
Some other things I would look into, is how long has your coolant been in there? Maybe it is time for a good cooling system flush, flushing the radiator as well.