Question about 2000 Ford Focus

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Can i put water into my coolant resevoir? it is completely out of fluid and I don't have any coolant.

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Yes, water works fine. You just will need to add some antifreeze to the system before freezing weather arrives. If you have antifreeze in the vehicle and are just diluting it some, then drain it about halfway and refill with antifreeze when winter arrives. If it is empty and you are just putting water only, then if your engine is an alluminum block and head, it will be fine for now with just water. If you have a cast Iron block, then you will need to add antifreeze to lubricate and prevent your block from rusting on the inside!

Posted on Sep 08, 2010


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Posted on Jan 02, 2017


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1 Answer

Do you put water in the radiator

Yes, you can put it directly in the radiator. You may have a resevoir you can add more coolant in, also. Either one is okay. I much more prefer to add it directly to the radiator. Just please make sure it is completely COOL before you open it. If not, then open it very slowy. When you take the pressure off of it, the water/coolant will instantly boil and explode. I still have the scars of removing a cap that I thought was cool enough.

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I have a 2006 c5500 and the water light came on. Is it as easy as draining the fuel filter? and should I drain the fuel and change the filter?

Hi there,

It's important to understand that a "Water" warning light, does not relate to fuel.

If it is indeed a 'water' warning light, then it is likely to be either:

1) windscreen washer bottle water is low, or
2) engine coolant fluid is low (check the level of your coolant resevoir bottle)

If your coolant is low, then you should investigate why you are losing coolant fluid.


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I have a pinhole in my heater hose causing me to lose coolant, my mechanic has done a temporary fix as the hoses are on back order, i am losing coolant again, so i think the temp fix has given way, can i...

Yes you can but make sure the radiator is also full. The radiator uses suction to pull fluid back into it from the overflow reservoir. If there is a leak there may not be enough suction available to **** fluid back into the radiator as the engine cools.

Mar 19, 2011 | 2004 Chevrolet Aveo

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Just changed out the waterpump. fluid in resevoir full, maybe to full, is this a problem. No heat coming out of dash?


Jan 21, 2011 | 2002 Dodge Grand Caravan

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I need to change coolant. How do I bleed air from the system so that I can fill it. Thanks.

Drain the coolant. Then fill resevoir and/or radiator. Then start the car. The water pump will circulate the fluid into all the nooks and crannies. With the engine on but not hot and the resevoir/radiator cap off, fill till you are at the FULL or "F" line. If it's just a radiator with no resevoir, fill to the bottom of the filler neck. You are then done.

Jan 19, 2011 | Toyota ECHO Cars & Trucks

1 Answer

The coolant light remains on even after the radiator has been replace

have you checked the plug in at the coolant resevoir? if good, have you checked the fuse panel for blown fuses? low coolant light comes on because the sensor n the coolant resevoir tells the computer says there is not enough fluid in your resevior, the clear tank under the hood that connects to the radiator. you may have a bad plug in or a bad resevoir. i suggest you check fluid,,if good ,,check plug in,, if good,,replace resevoir,, hope this helps!!

Sep 19, 2010 | Oldsmobile Intrigue Cars & Trucks

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What liquids go in each resevoir?

Coolant in 50% concentration goes into the coolant overflow bottle. Windshield wiper fluid into the wiper fluid bottle. Power steering fluid into the power steering fluid bottle.
You do not need to add any other fluids to these. Do not add water to the washer fluid bottle for example, if you drive in a climate that would allow it to freeze.

Dec 21, 2009 | 2002 Lincoln LS

1 Answer

No cold air & at same time resevoir has brown residue caked to si

Engine probably needs a cooling system flush and replace coolant with new Long Life Anti-Freeze, check condition of serpentine belt at same time. A/C system probably needs a recharge at your local shop.

Aug 08, 2009 | 1997 Pontiac Grand Prix

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Over filling

She didnt put washer fluid in did she? What will happen when car warms up and coolant expands in tank it will push some out will not hurt anything though if put washer fluid in will need to flush coolant system. if you havent run yet just drain coolant resevoir and refill

Dec 04, 2008 | 2000 Jaguar XK

4 Answers

Engine coolant

you need maybe 1+1/2 gallon of distilled water;NOT TAP WATER and 1 gallon of Mazda Coolant; NOT 50/50 mix..


1.from the radiator, remove the drain plug, let it drain. for faster drain, also remove the resevoir cap.

2.when empty, put drain plug back on refill the resevior with the distilled water until full.

3.with the resevior cap off start engine with heat settings on Hi, until the coolant temp guage begin to rise or when thermostat opens. turn off engine.

4. repeat steps 1-3 until only clear water drains.

5.make sure drain plug is in, refill resevior with Mazda coolant til about half way (in case there's any expansion), do not put cap on yet, let the air bleed. start engine, let it run for 5 min.

6. accelerate in park/neutral to 2500RPM's (DO NOT drive yet) to help bleed the air keep an eye on coolant level because you will have to top it off.

7.check level as temp reaches normal; half point as usual. put resevior cap on drive around the block and check level again. make sure coolant is on the proper level; "F" or "MAX"...of course when the engine cools it will be below, but while the temp is normal it should be on the proper level.

Oct 18, 2008 | 2003 Mazda Mazda6

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