What's the effect of a more concentrated coolant/water mix? Too much
water seems obvious, but what about more coolant? MB coolant suggests
50/50 and 55/55. If car runs in a hot environment, would increasing
coolant concentration to 75% coolant / 25% water mix keep car cooler?
Typically coolant keeps water from freezing (antifreeze) and lowers
boiling point. How concentrated can you make coolant? Safely?
Ethylene glycol is a poorer absorber of heat than water, so too much
will cause your engine to overheat. Further, the freezing and boiling
point changes in a mixture are a colligative property, and the effect
peaks out around 60% (good graph at http://www.gi.alaska.edu/ScienceForum/ASF6/680.html ).
50% is usually specified because it's easy for drivers to add half and
half rather than 60% (and again, the 50% has absorbs heat better).
Lloyd's correct. There is however a product that makes coolant more
effective by reducing its surface tension. It's made by Red Line and
it's called Water Wetter. I've had noticeable results in every vehicle
I've used it in.
Too little water, hard to remove heat from engine. I tend to like more water
than coolant... I go as much as 65% water and 35% water... however, the
estimated concentration in the entire system is about 60% water and 40%
Mmmm... ethylene glycol is just ONE of the components of a modern
coolant. A quite normal coolant nowadays offers approximately 140° C
range of operations. Approximately from -20/25 up to 112-125° C at
specified concentrations. The problem might be different, with old
engines. Sometimes, in the new coolant fluids, there are additives to
clean up the system. This MIGHT lead to leaks. :-O especially in the
area of the shaft of the water pump.
Yes: not all the dirt is unuseful... :-)
However, I always add fluid instead of water. And never had problems in
An extra point, talking about cooling fluids: some engines ABSOLUTELY
need the use of a specific (in Europe it's pink and not blue-green as
usual), aluminum protective, coolant. Don't try to add the usual
blue-green coolant! This might cause great damages to your engine!!!
Even holes... :-(
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