(Note: coolant and antifreeze refer to the same product, in below freezing, coolant
lowers the freeze point hence the name anti-freeze and in warm weather coolant helps
raise the boiling point, "coolant")
There are many types of engine coolant, colors range from the old standard green
to the blue coolant in the new Mercedes and BMW cars. All engine coolants help
guard against corrosion and
properly. Some of the main differences between the green coolant and the newer mixes
is the chemicals made to create the coolant. The new red, blue and yellow coolants
are more environmentally friendly and designed to last longer between services.
All engine coolants are highly toxic and should be kept away from animals or dumped down the drain. You
should not mix the different coolant types, if your engine came with red coolant
then you should add red coolant only. The manufacturers of Dexcool (red) have had
a problem with the coolant lasting as long as it should, depending on the climate
and driving conditions the coolant can decompose causing coolant passage blockage
in the radiator
To avoid this problem simply change your coolant more often then the recommended
100,000 miles. Change your coolant every 40,000 miles to prevent this problem. All
engine coolant must be replaced on a normal schedule to avoid aging coolant changing
its chemical base composition to a acid base. This condition will cause the coolant
to eat away at internal engine
gaskets, causing premature engine failure.
The coolant mixture to water should be about 60% coolant to 40% water. Always
add and check coolant level in the coolant reservoir when the vehicle is cold. Be
careful of harsh cooling system chemical flushes because they can cause more damage
then good, especially to aluminum heads, intake manifolds and the engine block. Always read the warning label carefully before using any brand of coolant.
Engine coolant colors can vary from green, orange, blue and yellow each having there own unique protective and environmental properties.
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Article first published 2016-06-13