Whats the best coolant mix for a very hot climate??
As it is now, in the last couple of days my car has been running about 15 degrees hotter than normal on both city and highway, so i decided to pull the radiator and flush the coolant to see if that helps any. Wasnt much in the radiator, i did straighten all the bent fins, so maybe that will help but before i fill it up with coolant again i was wondering what the best mix is for a hot climate. Around here, especially with a black interior and a/c that is not currently functioning, every 10 degrees that the coolant temp rises makes a big difference inside the cockpit. Also could you give these numbers in reference to actual amounts needed to fill the coolant system instead of a percentage ratio, as i am not sure how much the system holds or how much water from the flush will still be in the block when i fill it up again.
Re: Whats the best coolant mix for a very hot climate?? (Dan Parker '96)
Another inexpensive item that helps is a 160 thermostat (stock is 180). I just put one in my 95 LT1 and my normal running temp came down 25 degrees (in Alabama summer). On the surface this would appear to not make sense, but I think the 160 flows a little more volume.
Re: Whats the best coolant mix for a very hot climate?? (C44ever)
Another point to consider is whether you use A/C. With the A/C on Max or Recirc the heater core will be exposed to Freezing air, and coolant flow to the core will be shut off. Best to have enough antifreeze in the mix to cover down to 28 degrees or so. 10% antifreeze protects to 25 degrees.
The Redline site (www.redline.com) has a nice discussion of this topic.