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AK Cold Start Specialist
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Discussion Starter · #1 ·
To fix the before mentioned steering problem, I need to take the radiator out which involves draining the coolant unless there is some special trick. I have one of the oem heaters in the mule, so other than closing the heater valve to keep coolant in the heater core, is there anything special that I need to do? Can I reuse older coolant? Is 5 quarts enough of the mix? and Can I use the optimal ratio of 70/30 coolant to water ratio instead of the suggested 50/50?
Thanks, I'm trying to get the issue done with.
 

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My hat is made of tinfoil
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20,826 Posts
Just drain it......if the coolant is new and clean, just reuse it.
If dirty, oily, or more than 2 years old its time to drain the whole system and replace it anyways.

Use a mix of about 50/50 or for extra cold weather protection up to 60/40 since your in alaska.

New coolant is important, like other fluids, its good to change it.
Also engine oil, tranny fluid, brake fluid, diff fluid etc.
 

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It is critical to never use coolant over three years old in the Mule, it will turn acidic and eat the radiators from the inside out, chews up the gas engine blocks really badly, and causes corrosion around the waterpump shaft seal. Same as with a new car or truck.

Also, another guy just had the same loose steering gear issue. When it rains, it pours! Read my response to how I just fixed three of mine, including two new ones. You can reach the bolts from the bottom without pulling the radiator, and use the shim approach pretty quickly. If you do not have tire lube, soapy water works just as well - unless it is too cold to keep from freezing.

I no longer use regular antifreeze in my Mules, but use a product from EvansCool that is a waterless and a true permanent replacement. The use of that requires a complete draining of all cooling system components, including both radiators and the engine block, and flushing to get out any crud. The good news is that once changed it really is permanent, and there is never again any corrosion problems with the waterpumps.
 
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