Antifreeze mixture adjustment

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Army RX8
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Antifreeze mixture adjustment

Postby Army RX8 » Wed Sep 22, 2010 9:14

Trying to get my 8 ready for its trip to alaska in the coming month. I need to get the antifreeze rated for about -55 degrees. Currently its rated for -20. Would I be better off draining out a bit and try to figure out the concoction to get it to- 55 or just drain it all and refill? Math hurts my head :)
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RX-7 Chris
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Postby RX-7 Chris » Wed Sep 22, 2010 9:14

to be safe I would take it to a shop and have it flushed. I would be worried that I didn't get the entire system flushed and it wasn't setup for -55.

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iani1.1
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Postby iani1.1 » Wed Sep 22, 2010 9:14

yes, flush the whole system out and refill to be on the safeside.
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Renesis Rx
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Postby Renesis Rx » Wed Sep 22, 2010 9:14

Agree, complete flush. I'm just curious as to how many 8's are gonna be in Alaska.
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Army RX8
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Postby Army RX8 » Wed Sep 22, 2010 9:14

Renesis Rx wrote:Agree, complete flush. I'm just curious as to how many 8's are gonna be in Alaska.


There's actually a couple of them up there. I talked to the dealership a month ago and the were already tracking 4. A guy in my unit is bringing his Evo MR up there
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tbot
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Postby tbot » Wed Sep 22, 2010 9:14

Nice dude!!! But I agree with everyone else, complete flush and start fresh. Besides that never hurt even here in colorado lol
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Postby chickenwafer » Wed Sep 22, 2010 9:14

If you can, look into Evans NPG+ coolant. It's a waterless coolant that last 20 years and can withstand a much wider range of temperature, and since it's waterless is never freezes or boils.

The only downside is it's more expensive (but it pays for itself eventually since it will outlast your car), but the biggest drawback is there can't be ANY water/coolant in your cooling system since Evans is waterless. It usually takes 2-3 complete flushes with antifreeze to get it clear.
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Army RX8
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Postby Army RX8 » Thu Sep 23, 2010 9:14

complete flush and refill from Mazda in motorcity, $162. Half tempted to do it myself, but i dont have the time
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Postby *MS3~SNAIL* » Thu Sep 23, 2010 9:14

+1...Flush and refill.
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Postby Army RX8 » Thu Sep 23, 2010 9:14

Got it covered, making my appointment this weekend. On the plus side i found out theres such a thing as a circulating engine heater. Instead of installing a freeze plug heater, which mazda doesnt make anyways, i can install a pump into the coolant line that cycles the coolant thru the motor heating the whole system.
I got one for my truck and the car. Significantly cheaper than Fords solution. Fords freeze plug heater for my F-150 was $180 for parts PLUS $418 install for 4 hours of work due to having to remove the motor mount. The circulating pump... half an hour extra if done in conjunction with a flush and fill.
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