antifreeze change

[remley]

I want to change the antifreeze in my 82 450c to the new extended cool gard II.Do I need to drain the block? And if I need to where are the freeze plugs located.The antifreeze in the machine is heavy duty diesel engine antifreeze now.
It has an coolant tank heater. I thought maybe by taking the hose loose on the block that would do the job.

I want to thankyou guys for all the usefull information you supplied to me in the past

Thanks!

[digitup2]

The proper way to get all coolant is to flush the system with tap water then refill with coolant and water Most of the Deere blocks have a 1/8th npt plug low in the water jacket that will get most out Don't go poping out frost plugs for this job it may get a bit complicated .Digitup.

[jtrichard]

they are not freeze or frost plugs they are core/soft plugs to remove the casting sand

[Lavoy]

That may be technically correct, but I guarantee you that if you went to a parts store and asked for a core plug, they will look at you like you are purple. The commonly accepted names are freeze, frost, or expansion plugs.
Lavoy

[jtrichard]

that is true but a few PARTS MEN would know what your asking for its just that people get the idea that they are in there to protect a block from cracking from freezing NOT