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How do you change the antifreeze on the radiator?

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Two ways to drain the radiator..
There is a drain plug on the radiator - inside - bottom corner - usually on drivers side..
OR - pull off the lowe hose..

Hope this helps !!
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Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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2006 Chevy trail blazer. Keeps getting hot. Anti-freeze is full, overflow container is half full. Every time I turn it off can hear fluid in radiator boiling and bubbling?


Pam are you sure it's boiling? If the Antifreeze is boiling I'd think you'd see steam coming out of your reservoir as the water expands into the reservoir, but you didn't say you see anything like that.
Of course engines get hot, that's why we have the cooling systems but it doesn't sound like it's "boiling" to me with no signs of visible steam unless your antifreeze level is really low?

If it's really boiling, and you antifreeze level is good, then your reservoir should be getting filled up with expanded hot water that goes into it to catch it when it expands.

If the water isn't going into the reservoir, then maybe your antifreeze level in the radiator is too low and you need to add antifreeze?
.
Best to fill the radiator with the engine cooled down. If you ever have to open the radiator when it's hot, NEVER open it with your bare hand as you could get scolded with boiling water. Instead use a big thick towel to remove the radiator cap off a hot engine. Again, if you can, just wait until the engine cools then open the radiator cap.

With the engine cool, you can fill the radiator with a 50/50 antifreeze mix. The 50/50 mix come premixed 50 percent water, and 50 percent antifreeze. So you can throw that stuff straight into the radiator.

Non mixed antifreeze needs to be mixed 50/50. Some people use 50 percent distilled water when they mix it because distilled water doesn't have the minerals in it that may get stuck in your radiator. That's being a bit picky about it though. Tap water works fine in a pinch. The other 50 percent is antifreeze. You can mix it right in the radiator too, put in a measured amount of the antifreeze, followed by the same measured amount of water. The water pump will mix it all together when you run the engine.

Put the cap back on and run the engine and if/when the water "boils" it should go into your reservoir. If it does boil in go in the reservoir then yes...your engine is getting hot and the antifreeze is boiling.

When the antifreeze boils, it's probably because your thermostat is stuck closed. That means the thermostat isn't letting water circulate through the radiator to get cooled. Thermostats are cheap...no more than $30 I'd say for most cars. Changing them is pretty easy too as they are usually right at the top of the engine. A mechanic may charge $100 to change it....but it's an easy job on most vehicles requiring just a couple sockets/socket wrench.

Oct 03, 2016 | Cars & Trucks

1 Answer

Changing aNTIFREEZE IN TUNDRA


Remove radiator cap.Remove radiator bung from bottom of radiator and drain into container.Replace bung.Replace new 50/50 water/antifreeze mix.Turn interior heater up to max with fan on lowest setting.Run vehicle until hot, topping up radiator as required.Replace radiator cap when bubbling ceases. Road test vehicle, return and recheck level after cooling down period.Recheck level over the next few days and check for any new signs of leakage in system.(Fresh introduction of antifreeze can reduce the tension of the water molecules and can produce new leaks)

Nov 13, 2012 | Cars & Trucks

1 Answer

How to change my engine coolant in a 1992 ford ranger-v6 3.0 engine, with what kind of coolant and how much of it


Hello again Vicki, you can read my first post to you on type. Now for where and how. Put suitable container under radiator drain valve. Start to drain old antifreeze, you can also loosen radiator cap for faster drain, but make sure antifreeze doesn't start to spill all over your driveway or garage floor. When radiator and engine are mostly drained, I would recommend to change the thermostat. Follow the top radiator hose down to the engine. This is where you'll find the thermostat. Remove the attaching bolts and remove thermostat.If you wish to flush your engine,you can put water down the thermostat hole as well as the radiator cap hole, or you can do a fancy flush. Shut drain below, reinstall thermostat housing without thermostat, fill radiator with fancy flush cleaning solution and water replace radiator cap ,run for time stated on can of flush. Now you go back to where I began and start the draining again. Dispose off antifreeze correctly it is dangerous to animals if they ingest. Close drain,and fill engine with antifreeze thru thermostat housing, when almost to top install new thermostat and gasket. fill radiator almost to top, start engine, open inside heater and let engine warm to operating temperature. At this time the antifreeze level will drop, because thermostat will open, and you can fill some more .This should eliminate any possible air bubbles. Fill your coolant tank. I would like to know how you make out. GOOD LUCK.

Oct 11, 2011 | 1992 Ford Ranger

1 Answer

How many gal of antifreeze should i put in the coolant system? I put 2 gal in as there was little left in the system. I went to drive the truck and within 15 min the truck was over heating. The antifreeze...


Was it knocking in the radiator when it over heated if so you most likely got an air lock in the system by pouring the new antifreeze in to fast. You need to add it real slow and once you think the radiator is full start the truck and let it warm up and leave the radiator cap off until the thermostat opens and then add more antifreeze because when the stat opens the level will go lower. Once you are sure the antifreeze is circulating an full then you can go drive the truck. Some people use a 50 percent mix of antifreeze to water but I always use 100 percent antifreeze it runs cooler.

Jun 05, 2017 | 1989 Ford F 250

2 Answers

How do i change the radiator hose?


BUY YOUR RADIATOR HOSES FIRST MAKE SURE NEW HOSES MATCH THE OLD HOSES. BUY NEW RADIATOR CLAMPS AND HAVE EXTRA GALLON OF ANTIFREEZE. MAKE SURE ENGINE IS COOL IF YOU GOING TO CHANGE TOP RADIATOR HOSE REMOVE RADIATOR CAP OR OVER FLOW JUG CAP IF YOUR RADIATOR DONT HAVE RADIATOR CAP FIND RADIATOR DRAIN PLUG.PLACE A CATCH PAN.OPEN RADIATOR DRAIN PLUG CATCH ANTIFREEZE. DRAIN HALF ANTIFEEZE IF YOU GOING TO REPLACE TOP HOSE AND DRAIN OUT ALL ANTIFREEZE IF YOU GOING TO CHANGE LOWER COOLANT HOSE TO WATER PUMP.WHEN DONE CLOSE DRAIN PLUG.PUT ANTIFREEZE IN A SAFE PLACE FROM PETS AND KIDS UNTIL JOB DONE. WHEN YOU REMOVE COOLANT REMOVE WATER HOSE CLAMPS THEN REMOVE RADIATOR HOSES PUT NEW RADIATOR HOSES AND CLAMPS ON HOSES TIGHTEN HOSE CLAMPS DONT OVER TIGHTEN. POUR ANTIFREEZE IN RADIATOR.CRANK ENGINE UP CHECK FOR LEAKS.CHECK COOLANT LEVEL WHEN THERMOSTAT OPENS ADD MORE COOLANT AS NEEDED.

Jun 13, 2010 | 1991 Buick LeSabre

1 Answer

Best way to change coolant in 2003 sierra


With engine cold, remove radiator cap. At bottom of radiator on left side (as you stand in fronof truck), there is a plastic drain plug that screws into the radiator. This plug does not look like a bottle cap, rather it looks like a large, raised tab. Turn counterclockwise to remove. Have a large pan under the truck at this location, or have the truck parked on the grass. Allow to drain completely. Dispose of the old antifreeze and do let children or pets drink it; it is deadly poison. If you want to do this right, replace the plug, refill the radiator with water only, replace the radiator cap, start engine and let run until opwerating temperature is reached (about 20 minutes), then turn engine off, let cool completely, and repeat the drain procedure. This will more thoroughly remove the old antifreeze from the system. Now refill the radiator with the proper mixture of new antifreeze and water, run engine to proper operating temperature. turn off engine and let cool completely. Add additional water and antifreeze into the coolant overflow bottle if necessary. After changing antifreeze, you may need to add more again after couple of days.

Feb 26, 2010 | 2003 GMC Sierra 1500

1 Answer

How change antifreeze in car raditor?


At the bottom of the radiator there is a plastic knob this is the petcock drain plug it can be hard to see and turn so you may need to jack up the front of the car a little to crawl under the front and look at the bottom of the radiator but if you can reach it from the top and turn it with a pair of pliers do so that way this will allow you to drain the radiator, remove the radiator cap if it has one to allow air to pass through radiator, if it has no radiator cap remove the cap on the radiator expansion reserve tank, after all antifreeze is drained turn petcock drain plug back in till tight then refill raidiator with 50% water 50% anti freeze mixture, start car and top off antifreeze run the car or drive for ten minutes then top off antifreeze.

Sep 11, 2009 | 1999 Mazda 626

2 Answers

Im trying to change the antifreeze but it has only one cap on the plastic and not on the raditor would that be a prob when change


Best way to change the antifreeze is to open the petcock at the bottom of the radiator to drain the antifreeze/coolant. Once completely drained close the petcock and refill. Only other way would be to get a flush kit which involves cutting a heater hose, inserting a T and running a garden hose through the system with the radiator open at the bottom through the petcock while the motor is running.
Hope this answers your question. Good luck!
Greg

Aug 14, 2009 | 2004 Jeep Liberty

1 Answer

Change the antifreeze


THE RADIATOR PLUG? IF SO THEY MAKE A SPECIAL SOCKET, ASK FOR A RADIATOR PETCOCK SOCKET. THEY ARE CHEAP, $2-$3

Dec 08, 2008 | 1998 Dodge Grand Caravan

2 Answers

Leaking Anti Freeze on a Dodge Neon 1999


i had the same problem until i changed my water pump,so you might want to get that checked out

Nov 15, 2008 | 1999 Dodge Neon

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