Simon_Jester wrote: Why would you want antifreeze in your engine in the summer anyway? Wouldn't it make more sense to keep the stuff in reserve until you're going to need it?
Anti freeze also serves to provide corrosion protection to the cooling system piping and pump, and it gives you a couple degree higher boiling point thus reducing the chance of overheating under extreme conditions. So that’s why you always want anti freeze in the coolant if you can get it, even if you are in the desert. If you have to dump in plain water you start getting trouble in the long term, particularly if that water is random Russian river water you threw in after Hans let the tank overheat on a road march in which the dust blinded him from even seeing the temperature gauge, and not water which was well filtered, or ideally distilled. I’m sure you’ve seen mineral stains around faucets and such, you start getting that kind of thing inside the engine; only it gets worse because of the high heat levels and corrosion of the metal.
To make matters worse, the dust in Russia from so many long road marches on dirt roads choked the engines of German tanks and trucks and exceeded the abilities of the air filters to contain it. So lots of dirt got into the engines and engine oil, making everything worse in terms of low performance, heavy internal wear, and consequential overheating (causing precious anti freeze to boil out) and outright failures.
Hitler personally made this all the worse because he would not allow an adequate number of replacement engines to even try to be shipped to the frontline units. He wanted all the engines kept back for new tanks so he could keep raising whole new Panzer divisions, rather then keeping the existing ones up to strength. The Germans never learned any better either, and kept raising whole new divisions until the utter end of the war. Indeed in early 1945 when it became hard to find manpower for whole new divisions they just started forming whole new brigades!
Hauling anti freeze around in reserve just means you are stuck with the exact same logistical problem they had when winter hit. Too much distance, not enough transport. Hauling around thousands of gallons of anti freeze for months in a forward position just not going to happen. Either its in the radiator, or its going to be hundreds of miles to the rear at the Army and Army Group level supply dumps.
In Russia the Germans had to send entire army corps marching up single unpaved roads (one paved road per division was considered the normal standard), and supply entire armies or in some instances several armies down a single railroad track which had only bare bones standards in terms of passing sidings, water towers, turntables ect... which let you make the most of the track.
"This cult of special forces is as sensible as to form a Royal Corps of Tree Climbers and say that no soldier who does not wear its green hat with a bunch of oak leaves stuck in it should be expected to climb a tree"
— Field Marshal William Slim 1956