Heat issues going with FI

Sh0velMan

I run WW and water in my Z.

Just the WW added to the OEM fill helped a little, 3-4 degrees in normal use. The effect is a lot more dramatic with straight water.

Reducing your coolant mix to ~15% antifreeze (and thus raising your freeze temp to around 10-15 degrees F, so if you live in Fargo or something, probably not something you want to do) and adding WW will make a dramatic difference.

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theDreamer

Minus the removal of antifreeze from the system and its plus & minuses for a daily driven car. Are there any potential negatives from running more water into the system? Need to dump the fluid more often and refill or anything?

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Sh0velMan

Not if you run distilled.

I've heard mixed opinions on whether or not you need to run distilled if you are running zero antifreeze, as apparently the minerals in the water mostly affect the antifreeze itself, causing it to goop up and exacerbate sediment formation.

I'll admit, I'm running hose water. If I put a thousand miles on the car this year, I'll be surprised, so I'm really not worried about it. I'll be dumping the coolant regularly enough that it won't be a big deal, I'm fairly sure.

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