Question about 1997 Lexus GS 300

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I noticed my car is overheating today, is it okay to add coolant with tap water or does it have to be distilled water

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Distilled is the best, tap water has minerals in it that can plug coolant systems. Also, they sell pre-mixed coolant ready to use.

Posted on Oct 08, 2009

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I have a 2013 dodge journey 4 cyl......my coolant tank shows about 1 inch low on coolant ....is it ok to add tap water to bring it up to max level


No , never use tap water ! A 50/50 mix of water and antifreeze ! Is it low when engine is hot or is below add cold mark . Should be two levels hot or cold ! And use distilled water if you make your own 50/50 mix .

Dec 16, 2016 | 2013 Dodge Journey

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2000 Montero Sport. Can I add water where the coolant goes if it's overheating and I have no coolant?


Yes you can. It will be a weaker mixture of water and antifreeze, but okay for now till you can stop it from overheating.

Jul 28, 2015 | Mitsubishi Cars & Trucks

1 Answer

Do I need to add coolant


You can add some plain water, or go ahead and mix with coolant. The level should be half way between full and add when the engine is cold.

Jun 20, 2013 | 2002 Toyota Sienna

1 Answer

IT KEEPS OVERHEATING


REPLACE THE THERMOSTAT AND RADIATOR PRESSURE CAP.IF COOLANT LOW, ADD MORE COOLANT THROUGH COOLANT OVERFLOW UNTIL COOLANT LEVEL IN THE COOLANT OVERFLOW STAY AT FULL COLD MARK.REASON POUR COOLANT THROUGH COOLANT OVERFLOW MOST GM CARS DONT HAVE RADIATOR CAP.WHEN YOU GET COOLANT LEVEL OKAY, CRANK CAR LET IT IDLE UNTIL ENGINE GET HOT BUILD UP PRESSURE THEN TURN OFF CAR.CHECK FOR COOLANTS LEAKS AT THE RADIATOR HOSES,CHECK FOR LEAKS AT THE RADIATOR, CHECK FOR LEAKS AT WATER PUMP WEEP HOLE IF YOU SEE COOLANT LEAKING FROM WEEP HOLE REPLACE WATER PUMP. IF CAR OVERHEATING WHILE IDLING YOUR COOLING FANS NOT WORKING CHECK COOLING FANS FUSE AND RELAYS.IF FUSE AND RELAYS OKAY THE ENGINECOOLANT TEMPERATURE SENSOR BAD.

Aug 01, 2011 | 1994 Cadillac DeVille

1 Answer

How to drain cooling system


Drain the radiator while the coolant is cold. Open the radiator drain plug at the bottom driver side, where bumper meets lower rail, and drain the fluid into a 5-gallon container. If it refuses to open or broke, remove the plastic cover at passenger side and disconnect the lower radiator hose. Do not forget to open the coolant cap, which allows air to enter the radiator core. With all the fluid emptied, refill the radiator tap or with distilled water, leave the cap open, and run the engine until it reaches operating temperature. The goal here is to get the thermostat open, diluting what coolant remains in the engine but the water will start boiling, and burn you out.
Or you can run the engine to get hot but not up to the boiling point. In this case the Flush won't be perfect, but you decrease the danger to burn out. Repeat the drain/refill procedure, until you will get a clear discharge.Repeat the drain and refill procedure two more times with distilled water. The tap water contains chlorine and will corrode the radiator and the cooling system. To fill the radiator, it is recommended to ad 30% volume distilled water to 70% volume concentrated Antifreeze. If you flush the system and rinse with water you must add only 30% water to the antifreeze. There is more water trapped inside the engine compartment, because the thermostat is closed. Make sure to have a coolant density tester. When you finish one of 5 balls must sink, that indicates that you reached 50/50 strength. That means 50% Prestone and 50% Water, which will provide to your car a -34F degree FREEZE-UP Protection , and +265F degree BOILOVER protection. Make sure to open bleeding valve to discharge air pockets from the cooling system. Add coolant.The next day, while engine is cold open the radiator cap, and test the strength of coolant. If it is not quite right, then siphon coolant from the radiator and add antifreeze, or distilled water as necessary. Start the Engine. Untwist the coolant bleeding nipple. If there will be a jet or stream of coolant, that means the water pump is working and is O.K., and there are not air pocket left in the cooling system.
Good Luck.




Nov 06, 2010 | 2002 Dodge Caravan

2 Answers

How do I drain coolant from a 2001 ford mustang GT?


unscrew the freezeplug located on the bottom corner of the radiator

Aug 17, 2010 | 2001 Ford Mustang

2 Answers

Air conditioning works but not heat. blows out


At the radiator, drain and then flush with water then add 1 gallon of new antifreeze and top off with cool water. Now the cooling system will work.
If you have not performed routine maintenance on your cooling system - it will clog the heater in 10 years or less. Sometimes a bottle of radiator flush (purchased at any walmart or kmart) can clear the heater core - but you will have to run it with the heater on full heat setting for a few hours of driving.

Let us know!!

Oct 10, 2009 | 1999 Ford Taurus

1 Answer

Could you please let me know if it is okay to mix


It's better if you boil it first. Or...buy distilled water. They also sell pre-mixed coolant, that's ready to use.

Oct 08, 2009 | 2003 Lexus IS 300

1 Answer

Check Engine light came on....


Coolant=Antifreeze. It's the same stuff. It lowers your freezing point and raises your boiling point. That way you don't freeze your engine and you don't boil it when it gets hots. Now, onward....

The easiest thing to do is go buy 50/50 premixed antifreeze. The ratio is ready to be poured right in. The parts store will be able to tell which antifreeze will work best for your Jeep. It more than likely just uses plain jane green antifreeze. That's what I put in mine.

Otherwise you can buy non-diluted antifreeze and add water to make a 50/50 ratio.

A 50/50 ratio is important because too little antifreeze is bad, and so is too much. For instance, a system ratio of 80% is highly ineffecient. That's why I'm suggesting the prediluted stuff. A ratio too low risks having your block freeze up and bust.

If you do add water, DO NOT use regular tap water. Only use DISTILLED WATER. It's cheap, and it's free from impurities, whereas tap water is good to drink, but it bad for your antifreeze system balance due to extra minerals, etc in that water.

You can buy distilled water at any grocery store. It'll be labeled distilled, not drinking, water.

Your coolant should be changed every 2 years unless you have extended life coolant.

Be sure to check for leaks so make sure you're not loosing too much antifreeze. The tank where you pour it is called the reservoir tank, or expansion tank. It's where the coolant goes when it expands when heated.

Be sure not to let animals near the antifreeze. It has a sweet smell to them, but it's deadly. Antifreeze can be recycled. But if you must dispose of it, carry it to your local hazardous waste facility. It only take a small portion of that stuff to taint thousands of gallons of water.

If you have a 4.0 six cylinder especially, be sure to follow these directions. The blocks and heads are iron and they will rust really quick internally with too little antifreeze is used. These are awesome engines often getting 200k miles+.


Jan 18, 2009 | 1997 Jeep Grand Cherokee

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