Question about Cars & Trucks
Was the water added to the coolant reservoir or into the radiator? If the coolant reservoir it's a simple matter to unbolt it, drain it, reinstall and refill to proper level. If water was added to the radiator, it's best to drain the coolingg system and refill with the proper 50/50 mix of Dexcool. Water in the radiator will not hurt anything in the short term, but will not provide adequate protection.
Posted on May 11, 2014
Water/coolant mix should not be a problem but if you want the DEX- cool only the you'll have to do a radiator drain and flush. If you have never done a flush before I recommend having it done by a shop.
Posted on May 11, 2014
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Posted on Jan 02, 2017
SOURCE: Re: Dex-Cool in 1999 Lumina
The major reason for using dex-cool is that antifreeze is often neglected as a service item. If neglected, it becomes acidic over time which is particularly important with the use of aluminium in most major components which are served by antifreeze. Acid causes etching and premature failure of gaskets and permanent damage to blocks, heads and especially the radiator and heater core, which are not vert thick to begin with.
Since "normal" antifreeze acidifies faster than does dex-cool, mixing both together causes a change in breakdown rate...the more "normal" coolant added, the faster it breaks down.
Both coolants do not react chemically with each other and therefore retain the same ability to prevent boil over and freezing.
In reality, normal coolant can be used with little or no effect on components, provided that you change it every year. (that's where the EPA gets involved) They do not want people dumping this stuff into the ground, so they push for extended service intervals. Since dex cool has a longer service life, that's what they want you to use.
As far as how you chasnge the coolant, it is always a good idea to flush system during a change, regardless of antifreeze type. This removes solid particles which can plug radiator core. Radiators are much smaller than their older counterparts. Loss of even a small portion of cooling area can cause overheating. Engine running temps are also higher than older vehicles (heat=power output). Therefore most systems have a much smaller margin of error than before. What I find though is that regular flushing can also be bad for the system as the chems eat away at metal components in order to clean. I recommend regualr or dex cool antifreeze systems be flushed with water only, once a year, but retaining what you removed and filtering it through a coffee filter, using it during the year to "top off" the system. To retain effectiveness of coolant, use a hydrometer to check concentration, adding new coolant to bring reading to proper protection level.Then, every three years, do a complete chem flush and change entire batch. This keeps your system clean and the epa happy!
Posted on Mar 12, 2009
SOURCE: PCV VALVE
the pcv valve will be sticking out of the valve cover in either the front or back. and as for the dexcol, i would have it flushed really well and replaced with the reg green coolant. ive seen that stuff get bad quick.
Posted on Jan 02, 2009
What happens is the low coolant sensor is at the bottom of the fill bottle and all the dirt and grime get on it and it will not sense the coolant.You can usually tap on the bottle where the coolant sensor is and the light will go off or just replace it.It will either be on the bottom of the over flow bottle or in the radiator tank where the cap is.About 5 or 6 inches down.Hope this helps.Good luck.
Posted on Jan 12, 2010
Engineering terms here,
The DEX Cool has more "solids" in it (better heat transfer)
You can use either one, just don't mix them.
Posted on Feb 10, 2010
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DEX-COOL® is an ethylene-glycol coolant that was developed to last for 150,000 miles (240,000 km), or 5 years, whichever occurs first. It is recommended that only DEX-COOL® be used when coolant is added or changed. It's a good idea to purchase a gallon container or two of DEX-COOL® from an authorized GM dealer so the correct antifreeze is always available. A 50/50 mixture of this ethylene-glycol coolant and water should be used, providing freezing protection down to -34°F (1°C), boiling protection to 265°F (265°C), and rust and corrosion protection for the system. A solution stronger than 70% antifreeze is not recommended and pure antifreeze will freeze at only -8°F (-22°C).
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