Sludge in the cooling system. Sounds like what the federal government was doing to traded in cars last fall. Taking a good car and frying it. Bless them.
I worked in Milton in the 70s as an electronics tech.
Quote:
Originally Posted by 3-Wheeler
Hi ShadeTree,
Yes, holding 200°F is fine. I suppose that most of us assume that since it's anti-freeze, AND it's rated to some value, let's say 265°F, cause it says so on the can, then we also assume it's perfectly safe to drive at this temperature all the time.
The same can be said of motor oil. If the can says it... it must be OK.
Well just like motor oil, anti-freeze likes it better at cooler temperatures. Although I should mention that most engine manufacturers would like to see oil temperatures just slightly above boiling to burn of water condensation that occurs in the oil when the engine cools back down.
At the extreme temperatures of 265°F or so, I have seen anti-freeze turn into it's own form of sludge. It comes out looking like someone poured sawdust into the mix and let it settle to the bottom. That's what happens when it gets too hot.
Jim.
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