I can't say i've noticed coolant temp fluctuation. It is pretty steady. I'm going to be repairing my plenum this coming weekend, and have a new 180 tstat to put it. I'll test it in advance (to see what temp it opens/closes), and then i'll see if it causes the trucks temps to act any differently then the last two thermostats have.

Anyway, back to the topic at hand.

 

well, after reading all of that i think ill just get the 180 and see how things go. Also padodge how are those electric fans, was thinking of getting a set of those. Should increase horses due to less strain on the engine right, anything better than trying to spin that big heavy fan

 

Thanks for asking.. i can tell a nice difference with the electric fan even my mpg went up.. 126 miles on 9 gal. that 14 mpg on 3.55 gears on 35s she still a litte slow but not as bad as it use to be ..So i say hell yes i love the e-fans..