Originally Posted by Mike1995
If air has an effect on Dexcool, then just about every vehicle in the world that has Dexcool would be affected because of the vented cap on the over flow tank.
I've only read stuff with others talking about it, I really know little about coolant..
I do think a lot of the Dex Cool problems I've read about come from not changing out the fluid regularly, but air in the system can cause problems, as for whether or not it also increases acidity, that I do not know about..
The coolant in the overflow does not flow throughout the system and get heated up, the supposed main problem I read about air being in the system is supposed to be"Trapped air could allow for increased temperatures around the hot EGR passage in the plastic upper intake manifold, leading to failure of the manifold, internal coolant leaks, and severe engine damage.
That is why the bleeder screw is supposed to be there, so I guess the problem isn't a dex cool problem really...
If it is ok to post it I can post the link to where I found that info, which led me to drilling the 5/32" hole in my t-stat..