Neither VM nor Chrysler have either liability or warranty in effect on these powertrains, and FCA have sold me every last gallon of HOAT I'll ever buy from them.
The reason Propylene Glycol coolants are specifically DNU, are the same reason that Ethylene Glycol IAT (green) OAT (orange) ELOAT (red) and Honda blue are also specifically DNU (the last 2 not mentioned because they didn't exist back then) THAT REASON IS THAT THEY ARE NOT COMPATIBLE WITH HOAT, AND MIXING CAUSES VERY BAD THINGS TO HAPPEN, AND QUITE A VARIETY DEPENDING ON WHAT'S MIXED AND WHAT METALS ARE IN THE SYSTEM.
Evans Propylene Glycol coolant has inhibitors to be safe with Stainless, hardened, and mild steels, cast iron, Aluminum, copper, brass, tin, and lead. Basically anything one could find in any auto made in the last century. But it cannot be mixed with any other type of coolant, including water. For best results the entire system needs to be completely flushed, and completely dried before refilling.
Other significant benefits. Whereas traditional coolants require pressurization to prevent boiling of coolant, as pointed out above, Propylene Glycol coolants are recommended to be run with a vented cap. Even though the volume will increase with increased temp, at ambient pressure they will not boil or steam to very high temp. This does 2 good things 1) if you get a puncture or crack in your radiator, your coolant will not spray it's self empty all over everything because it's under no internal pressure. 2) Even though the operating temperature may be higher, say, 220-230F (with the 203F thermostat), the fact that there is no boiling or vaporization makes the thermal difference of the coolant inside the radiator and the air outside the radiator, the cooling efficiency is greatly improved, so when at normal operating temperatures, increased power/torque tunes will have less effect on coolant temperature. (as BTU load is increased, thermal efficiency is also increased.)
I have pets. Pets have a way of getting into stuff they hadn't aughta, particularly if it tastes sweet, like every traditional kind of coolant, that are all highly poisonous. The Evans products are not poisonous, and not harmful to the environment (yeah bite me, LOL). I've only had to haul one pet to the vet when she got into some old green stuff that was spilled. Don't ever want to go through that again.
I'm not trying to sell this stuff. I'm just passing forward stuff I've learned when researching.
Oh yeah, like him or not, Jay Leno has been working towards protecting all of his (toys, investments, collectables, whatever) for the last 20ish years, starting with the most valuable. Check it out, it's true. He's made videos explaining why, and showing the difference of the with and without.
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